512661087 has 6 divisors (see below), whose sum is σ = 740510472. Its totient is φ = 341774052.

The previous prime is 512661077. The next prime is 512661119. The reversal of 512661087 is 780166215.

512661087 is a `hidden beast` number, since 512 + 6 + 61 + 0 + 87 = 666.

It is not a de Polignac number, because 512661087 - 2²⁰ = 511612511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512661047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28481163 + ... + 28481180.

It is an arithmetic number, because the mean of its divisors is an integer number (123418412).

Almost surely, 2^512661087 is an apocalyptic number.

512661087 is a deficient number, since it is larger than the sum of its proper divisors (227849385).

512661087 is a wasteful number, since it uses less digits than its factorization.

512661087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56962349 (or 56962346 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 512661087 is about 22642.0203824659. The cubic root of 512661087 is about 800.3441680600.

The spelling of 512661087 in words is "five hundred twelve million, six hundred sixty-one thousand, eighty-seven".