6465217506 has 32 divisors (see below), whose sum is σ = 14242894848. Its totient is φ = 1940133840.

The previous prime is 6465217489. The next prime is 6465217547. The reversal of 6465217506 is 6057125646.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468726 + ... + 482321.

It is an arithmetic number, because the mean of its divisors is an integer number (445090464).

Almost surely, 2^6465217506 is an apocalyptic number.

6465217506 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6465217506 is an abundant number, since it is smaller than the sum of its proper divisors (7777677342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6465217506 is a wasteful number, since it uses less digits than its factorization.

6465217506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951166.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 6465217506 is about 80406.5762609005. The cubic root of 6465217506 is about 1862.9207499259.

The spelling of 6465217506 in words is "six billion, four hundred sixty-five million, two hundred seventeen thousand, five hundred six".