513090568 has 8 divisors (see below), whose sum is σ = 962044830. Its totient is φ = 256545280.

The previous prime is 513090563. The next prime is 513090569. The reversal of 513090568 is 865090315.

It can be written as a sum of positive squares in only one way, i.e., 512479044 + 611524 = 22638^2 + 782^2 .

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

It is not an unprimeable number, because it can be changed into a prime (513090563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32068153 + ... + 32068168.

Almost surely, 2^513090568 is an apocalyptic number.

It is an amenable number.

513090568 is a deficient number, since it is larger than the sum of its proper divisors (448954262).

513090568 is a wasteful number, since it uses less digits than its factorization.

513090568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64136327 (or 64136323 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 513090568 is about 22651.5025550183. The cubic root of 513090568 is about 800.5676013573.

The spelling of 513090568 in words is "five hundred thirteen million, ninety thousand, five hundred sixty-eight".