56618816 has 14 divisors (see below), whose sum is σ = 112353090. Its totient is φ = 28309376.

The previous prime is 56618813. The next prime is 56618839. The reversal of 56618816 is 61881665.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37258816 + 19360000 = 6104^2 + 4400^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56618813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442271 + ... + 442398.

Almost surely, 2^56618816 is an apocalyptic number.

It is an amenable number.

56618816 is a deficient number, since it is larger than the sum of its proper divisors (55734274).

56618816 is an equidigital number, since it uses as much as digits as its factorization.

56618816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884681 (or 884671 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 56618816 is about 7524.5475611494. The cubic root of 56618816 is about 383.9903064683.

The spelling of 56618816 in words is "fifty-six million, six hundred eighteen thousand, eight hundred sixteen".