56687190 has 32 divisors (see below), whose sum is σ = 155485440. Its totient is φ = 12957024.

The previous prime is 56687179. The next prime is 56687207. The reversal of 56687190 is 9178665.

It is a super-2 number, since 2×56687190² = 6426875020192200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

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, 134760 + ... + 135179.

It is an arithmetic number, because the mean of its divisors is an integer number (4858920).

Almost surely, 2^56687190 is an apocalyptic number.

56687190 is an abundant number, since it is smaller than the sum of its proper divisors (98798250).

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

56687190 is a wasteful number, since it uses less digits than its factorization.

56687190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269956.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 56687190 is about 7529.0895863975. The cubic root of 56687190 is about 384.1448157138.

The spelling of 56687190 in words is "fifty-six million, six hundred eighty-seven thousand, one hundred ninety".