56787642 has 32 divisors (see below), whose sum is σ = 127762560. Its totient is φ = 18927756.

The previous prime is 56787623. The next prime is 56787671. The reversal of 56787642 is 24678765.

56787642 is a `hidden beast` number, since 567 + 87 + 6 + 4 + 2 = 666.

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, 2118 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (3992580).

Almost surely, 2^56787642 is an apocalyptic number.

56787642 is an abundant number, since it is smaller than the sum of its proper divisors (70974918).

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

56787642 is an equidigital number, since it uses as much as digits as its factorization.

56787642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13006 (or 12988 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 56787642 is about 7535.7575597945. The cubic root of 56787642 is about 384.3715885479.

It can be divided in two parts, 567 and 87642, that added together give a square (88209 = 297²).

The spelling of 56787642 in words is "fifty-six million, seven hundred eighty-seven thousand, six hundred forty-two".