56609619 has 16 divisors (see below), whose sum is σ = 82473984. Its totient is φ = 34253600.

The previous prime is 56609611. The next prime is 56609639. The reversal of 56609619 is 91690665.

It is a cyclic number.

It is not a de Polignac number, because 56609619 - 2³ = 56609611 is a prime.

It is a super-2 number, since 2×56609619² = 6409297926650322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56609611) 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 15 ways as a sum of consecutive naturals, for example, 30142 + ... + 31964.

It is an arithmetic number, because the mean of its divisors is an integer number (5154624).

Almost surely, 2^56609619 is an apocalyptic number.

56609619 is a deficient number, since it is larger than the sum of its proper divisors (25864365).

56609619 is a wasteful number, since it uses less digits than its factorization.

56609619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 56609619 is about 7523.9364032400. The cubic root of 56609619 is about 383.9695139100.

The spelling of 56609619 in words is "fifty-six million, six hundred nine thousand, six hundred nineteen".