56623416 has 32 divisors (see below), whose sum is σ = 141820800. Its totient is φ = 18839520.

The previous prime is 56623409. The next prime is 56623417. The reversal of 56623416 is 61432665.

It is a super-2 number, since 2×56623416² = 6412422479018112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56623417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13275 + ... + 17013.

It is an arithmetic number, because the mean of its divisors is an integer number (4431900).

Almost surely, 2^56623416 is an apocalyptic number.

It is an amenable number.

56623416 is an abundant number, since it is smaller than the sum of its proper divisors (85197384).

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

56623416 is a wasteful number, since it uses less digits than its factorization.

56623416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379 (or 4375 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 56623416 is about 7524.8532211599. The cubic root of 56623416 is about 384.0007052938. Note that the first 3 decimals are identical.

Subtracting 56623416 from its reverse (61432665), we obtain a square (4809249 = 2193²).

The spelling of 56623416 in words is "fifty-six million, six hundred twenty-three thousand, four hundred sixteen".