667402504 has 8 divisors (see below), whose sum is σ = 1251379710. Its totient is φ = 333701248.

The previous prime is 667402471. The next prime is 667402511. The reversal of 667402504 is 405204766.

It can be written as a sum of positive squares in only one way, i.e., 400080004 + 267322500 = 20002^2 + 16350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×667402504² = 890852204690940032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 667402504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41712649 + ... + 41712664.

Almost surely, 2^667402504 is an apocalyptic number.

It is an amenable number.

667402504 is a deficient number, since it is larger than the sum of its proper divisors (583977206).

667402504 is a wasteful number, since it uses less digits than its factorization.

667402504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83425319 (or 83425315 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 667402504 is about 25834.1344735991. The cubic root of 667402504 is about 873.9017531171.

The spelling of 667402504 in words is "six hundred sixty-seven million, four hundred two thousand, five hundred four".