516718568 has 8 divisors (see below), whose sum is σ = 968847330. Its totient is φ = 258359280.

The previous prime is 516718537. The next prime is 516718591. The reversal of 516718568 is 865817615.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 304083844 + 212634724 = 17438^2 + 14582^2 .

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

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32294903 + ... + 32294918.

Almost surely, 2^516718568 is an apocalyptic number.

It is an amenable number.

516718568 is a deficient number, since it is larger than the sum of its proper divisors (452128762).

516718568 is a wasteful number, since it uses less digits than its factorization.

516718568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64589827 (or 64589823 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The square root of 516718568 is about 22731.4444767595. Note that the first 4 decimals coincide. The cubic root of 516718568 is about 802.4500762478.

The spelling of 516718568 in words is "five hundred sixteen million, seven hundred eighteen thousand, five hundred sixty-eight".