6495209604 has 36 divisors (see below), whose sum is σ = 17681405196. Its totient is φ = 1998525888.

The previous prime is 6495209599. The next prime is 6495209629. The reversal of 6495209604 is 4069025946.

6495209604 is a `hidden beast` number, since 64 + 9 + 520 + 9 + 60 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1253160000 + 5242049604 = 35400^2 + 72402^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6495209604.

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, 6938859 + ... + 6939794.

Almost surely, 2^6495209604 is an apocalyptic number.

It is an amenable number.

6495209604 is an abundant number, since it is smaller than the sum of its proper divisors (11186195592).

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

6495209604 is a wasteful number, since it uses less digits than its factorization.

6495209604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13878676 (or 13878671 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6495209604 is about 80592.8632324228. The cubic root of 6495209604 is about 1865.7969989012.

The spelling of 6495209604 in words is "six billion, four hundred ninety-five million, two hundred nine thousand, six hundred four".