56935661 has 4 divisors (see below), whose sum is σ = 56952000. Its totient is φ = 56919324.

The previous prime is 56935633. The next prime is 56935667. The reversal of 56935661 is 16653965.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56935661 - 2⁶ = 56935597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56935667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611 + ... + 10688.

It is an arithmetic number, because the mean of its divisors is an integer number (14238000).

Almost surely, 2^56935661 is an apocalyptic number.

It is an amenable number.

56935661 is a deficient number, since it is larger than the sum of its proper divisors (16339).

56935661 is a wasteful number, since it uses less digits than its factorization.

56935661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16338.

The product of its digits is 145800, while the sum is 41.

The square root of 56935661 is about 7545.5722778329. The cubic root of 56935661 is about 384.7052581944.

The spelling of 56935661 in words is "fifty-six million, nine hundred thirty-five thousand, six hundred sixty-one".