56616404 has 12 divisors (see below), whose sum is σ = 106700244. Its totient is φ = 26130624.

The previous prime is 56616403. The next prime is 56616419. The reversal of 56616404 is 40461665.

It can be written as a sum of positive squares in 2 ways, for example, as 5522500 + 51093904 = 2350^2 + 7148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56616403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544337 + ... + 544440.

It is an arithmetic number, because the mean of its divisors is an integer number (8891687).

Almost surely, 2^56616404 is an apocalyptic number.

It is an amenable number.

56616404 is a deficient number, since it is larger than the sum of its proper divisors (50083840).

56616404 is a wasteful number, since it uses less digits than its factorization.

56616404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088794 (or 1088792 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 56616404 is about 7524.3872840252. The cubic root of 56616404 is about 383.9848536416.

The spelling of 56616404 in words is "fifty-six million, six hundred sixteen thousand, four hundred four".