The answer is: 600

Gen 7:6 - He had been around for quite sometime before the flood waters came!

Noah, as depicted in the book of Genesis, was 600 years old when the Great Flood arrived. This detail underscores the ancient narrative's context where longevity surpasses our modern understanding. Noah's impressive age not only serves to highlight his remarkable life span but also emphasizes that he had ample time to fulfill the critical role of preparing for the flood—a divine warning that his community largely ignored.

Interestingly, before the flood, Noah spent around a century constructing the ark, a massive undertaking (anyone grabbing a hammer in today's world could surely appreciate that!). This detail showcases not only his steadfast faith but his diligence in obeying what he believed was a divine instruction, all while facing what must have been significant skepticism and ridicule from his neighbors.

Culturally, floods are seen across many mythologies—from the Epic of Gilgamesh to various indigenous traditions—suggesting that catastrophic floods might be a common human metaphor for cleansing, judgment, or rebirth. They carry echoes about the human condition, symbolizing a fresh start and the importance of resilience in darker times.

Interestingly, numbers featured prominently in Bible stories. The number "seven," for instance, appears throughout creation and signifies completeness. So perhaps Noah’s story invites us to reflect on the importance of listening to wisdom, observing cycles of nature, and honoring life-long preparations, even if those around us might not share our perspective.