502665668 has 6 divisors (see below), whose sum is σ = 879664926. Its totient is φ = 251332832.

The previous prime is 502665661. The next prime is 502665677. The reversal of 502665668 is 866566205.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 481890304 + 20775364 = 21952^2 + 4558^2 .

It is not an unprimeable number, because it can be changed into a prime (502665661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62833205 + ... + 62833212.

It is an arithmetic number, because the mean of its divisors is an integer number (146610821).

Almost surely, 2^502665668 is an apocalyptic number.

It is an amenable number.

502665668 is a deficient number, since it is larger than the sum of its proper divisors (376999258).

502665668 is a wasteful number, since it uses less digits than its factorization.

502665668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125666421 (or 125666419 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 502665668 is about 22420.2066895022. The cubic root of 502665668 is about 795.1085215040.

The spelling of 502665668 in words is "five hundred two million, six hundred sixty-five thousand, six hundred sixty-eight".