6497662464 has 120 divisors (see below), whose sum is σ = 18785103480. Its totient is φ = 2162147328.

The previous prime is 6497662433. The next prime is 6497662481. The reversal of 6497662464 is 4642667946.

It is a happy number.

6497662464 is a `hidden beast` number, since 6 + 4 + 9 + 7 + 6 + 624 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6497662464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4363032 + ... + 4364520.

It is an arithmetic number, because the mean of its divisors is an integer number (156542529).

Almost surely, 2^6497662464 is an apocalyptic number.

6497662464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6497662464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9392551740).

6497662464 is an abundant number, since it is smaller than the sum of its proper divisors (12287441016).

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

6497662464 is a wasteful number, since it uses less digits than its factorization.

6497662464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460 (or 2441 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The square root of 6497662464 is about 80608.0793965468. The cubic root of 6497662464 is about 1866.0318367345.

The spelling of 6497662464 in words is "six billion, four hundred ninety-seven million, six hundred sixty-two thousand, four hundred sixty-four".