56775870 has 64 divisors (see below), whose sum is σ = 152064000. Its totient is φ = 15074208.

The previous prime is 56775863. The next prime is 56775883. The reversal of 56775870 is 7857765.

56775870 is a `hidden beast` number, since 5 + 67 + 7 + 587 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118291 + ... + 118769.

It is an arithmetic number, because the mean of its divisors is an integer number (2376000).

Almost surely, 2^56775870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56775870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76032000).

56775870 is an abundant number, since it is smaller than the sum of its proper divisors (95288130).

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

56775870 is a wasteful number, since it uses less digits than its factorization.

56775870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The square root of 56775870 is about 7534.9764432279. The cubic root of 56775870 is about 384.3450268121.

The spelling of 56775870 in words is "fifty-six million, seven hundred seventy-five thousand, eight hundred seventy".