6665404752 has 30 divisors (see below), whose sum is σ = 18653876202. Its totient is φ = 2221801536.

The previous prime is 6665404729. The next prime is 6665404789. The reversal of 6665404752 is 2574045666.

It can be written as a sum of positive squares in only one way, i.e., 6664436496 + 968256 = 81636^2 + 984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6665404698 and 6665404707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23143623 + ... + 23143910.

Almost surely, 2^6665404752 is an apocalyptic number.

It is an amenable number.

6665404752 is an abundant number, since it is smaller than the sum of its proper divisors (11988471450).

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

6665404752 is a wasteful number, since it uses less digits than its factorization.

6665404752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46287547 (or 46287538 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The square root of 6665404752 is about 81641.9301094725. The cubic root of 6665404752 is about 1881.9532995519.

The spelling of 6665404752 in words is "six billion, six hundred sixty-five million, four hundred four thousand, seven hundred fifty-two".