56878623 has 6 divisors (see below), whose sum is σ = 82158024. Its totient is φ = 37919076.

The previous prime is 56878621. The next prime is 56878631. The reversal of 56878623 is 32687865.

56878623 is a `hidden beast` number, since 568 + 7 + 86 + 2 + 3 = 666.

It is not a de Polignac number, because 56878623 - 2¹ = 56878621 is a prime.

It is a super-2 number, since 2×56878623² = 6470355508752258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56878621) 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, 3159915 + ... + 3159932.

It is an arithmetic number, because the mean of its divisors is an integer number (13693004).

Almost surely, 2^56878623 is an apocalyptic number.

56878623 is a deficient number, since it is larger than the sum of its proper divisors (25279401).

56878623 is a wasteful number, since it uses less digits than its factorization.

56878623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319853 (or 6319850 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 56878623 is about 7541.7917632350. The cubic root of 56878623 is about 384.5767496895.

It can be divided in two parts, 5687862 and 3, that added together give a palindrome (5687865).

The spelling of 56878623 in words is "fifty-six million, eight hundred seventy-eight thousand, six hundred twenty-three".