6497594660 has 12 divisors (see below), whose sum is σ = 13644948828. Its totient is φ = 2599037856.

The previous prime is 6497594647. The next prime is 6497594707. The reversal of 6497594660 is 664957946.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3119892736 + 3377701924 = 55856^2 + 58118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6497594596 and 6497594605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162439847 + ... + 162439886.

It is an arithmetic number, because the mean of its divisors is an integer number (1137079069).

Almost surely, 2^6497594660 is an apocalyptic number.

It is an amenable number.

6497594660 is an abundant number, since it is smaller than the sum of its proper divisors (7147354168).

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

6497594660 is a wasteful number, since it uses less digits than its factorization.

6497594660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324879742 (or 324879740 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 56.

The square root of 6497594660 is about 80607.6588172613. The cubic root of 6497594660 is about 1866.0253459458.

The spelling of 6497594660 in words is "six billion, four hundred ninety-seven million, five hundred ninety-four thousand, six hundred sixty".