513668870 has 32 divisors (see below), whose sum is σ = 1086251040. Its totient is φ = 172419840.

The previous prime is 513668863. The next prime is 513668917. The reversal of 513668870 is 78866315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178175 + ... + 181034.

It is an arithmetic number, because the mean of its divisors is an integer number (33945345).

Almost surely, 2^513668870 is an apocalyptic number.

513668870 is an abundant number, since it is smaller than the sum of its proper divisors (572582170).

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

513668870 is a wasteful number, since it uses less digits than its factorization.

513668870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359240.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 513668870 is about 22664.2641618915. The cubic root of 513668870 is about 800.8682604388.

The spelling of 513668870 in words is "five hundred thirteen million, six hundred sixty-eight thousand, eight hundred seventy".