56980661 has 8 divisors (see below), whose sum is σ = 57904704. Its totient is φ = 56060640.

The previous prime is 56980597. The next prime is 56980663. The reversal of 56980661 is 16608965.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56980661 - 2⁶ = 56980597 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 (56980663) 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, 41000 + ... + 42366.

It is an arithmetic number, because the mean of its divisors is an integer number (7238088).

Almost surely, 2^56980661 is an apocalyptic number.

It is an amenable number.

56980661 is a deficient number, since it is larger than the sum of its proper divisors (924043).

56980661 is a wasteful number, since it uses less digits than its factorization.

56980661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 56980661 is about 7548.5535700557. The cubic root of 56980661 is about 384.8065841323.

The spelling of 56980661 in words is "fifty-six million, nine hundred eighty thousand, six hundred sixty-one".