516668904 has 24 divisors (see below), whose sum is σ = 1399311810. Its totient is φ = 172222944.

The previous prime is 516668903. The next prime is 516668953. The reversal of 516668904 is 409866615.

It can be written as a sum of positive squares in only one way, i.e., 470456100 + 46212804 = 21690^2 + 6798^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×516668904² = 533893512721122432, 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 516668904.

It is not an unprimeable number, because it can be changed into a prime (516668903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3587907 + ... + 3588050.

Almost surely, 2^516668904 is an apocalyptic number.

It is an amenable number.

516668904 is an abundant number, since it is smaller than the sum of its proper divisors (882642906).

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

516668904 is a wasteful number, since it uses less digits than its factorization.

516668904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7175969 (or 7175962 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 516668904 is about 22730.3520430283. The cubic root of 516668904 is about 802.4243664708.

The spelling of 516668904 in words is "five hundred sixteen million, six hundred sixty-eight thousand, nine hundred four".