507665868 has 12 divisors (see below), whose sum is σ = 1184553720. Its totient is φ = 169221952.

The previous prime is 507665857. The next prime is 507665897. The reversal of 507665868 is 868566705.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 507665868.

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, 21152733 + ... + 21152756.

It is an arithmetic number, because the mean of its divisors is an integer number (98712810).

Almost surely, 2^507665868 is an apocalyptic number.

It is an amenable number.

507665868 is an abundant number, since it is smaller than the sum of its proper divisors (676887852).

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

507665868 is a wasteful number, since it uses less digits than its factorization.

507665868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42305496 (or 42305494 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The square root of 507665868 is about 22531.4417647873. The cubic root of 507665868 is about 797.7362398630.

The spelling of 507665868 in words is "five hundred seven million, six hundred sixty-five thousand, eight hundred sixty-eight".