6525707664 has 40 divisors (see below), whose sum is σ = 19266376000. Its totient is φ = 1864487808.

The previous prime is 6525707659. The next prime is 6525707693. The reversal of 6525707664 is 4667075256.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9710539 + ... + 9711210.

It is an arithmetic number, because the mean of its divisors is an integer number (481659400).

Almost surely, 2^6525707664 is an apocalyptic number.

It is an amenable number.

6525707664 is an abundant number, since it is smaller than the sum of its proper divisors (12740668336).

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

6525707664 is a wasteful number, since it uses less digits than its factorization.

6525707664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19421767 (or 19421761 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 48.

The square root of 6525707664 is about 80781.8523184508. The cubic root of 6525707664 is about 1868.7127045513.

The spelling of 6525707664 in words is "six billion, five hundred twenty-five million, seven hundred seven thousand, six hundred sixty-four".