56866973 has 4 divisors (see below), whose sum is σ = 57830880. Its totient is φ = 55903068.

The previous prime is 56866967. The next prime is 56866993. The reversal of 56866973 is 37966865.

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 a de Polignac number, because none of the positive numbers 2^k-56866973 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 (56866903) 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, 481865 + ... + 481982.

It is an arithmetic number, because the mean of its divisors is an integer number (14457720).

Almost surely, 2^56866973 is an apocalyptic number.

It is an amenable number.

56866973 is a deficient number, since it is larger than the sum of its proper divisors (963907).

56866973 is an equidigital number, since it uses as much as digits as its factorization.

56866973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963906.

The product of its digits is 1632960, while the sum is 50.

The square root of 56866973 is about 7541.0193608026. The cubic root of 56866973 is about 384.5504912886.

The spelling of 56866973 in words is "fifty-six million, eight hundred sixty-six thousand, nine hundred seventy-three".