56722697 has 4 divisors (see below), whose sum is σ = 57098496. Its totient is φ = 56346900.

The previous prime is 56722651. The next prime is 56722709. The reversal of 56722697 is 79622765.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79622765 = 5 ⋅15924553.

It is a cyclic number.

It is not a de Polignac number, because 56722697 - 2¹² = 56718601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56722097) 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, 187673 + ... + 187974.

It is an arithmetic number, because the mean of its divisors is an integer number (14274624).

Almost surely, 2^56722697 is an apocalyptic number.

It is an amenable number.

56722697 is a deficient number, since it is larger than the sum of its proper divisors (375799).

56722697 is a wasteful number, since it uses less digits than its factorization.

56722697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375798.

The product of its digits is 317520, while the sum is 44.

The square root of 56722697 is about 7531.4472048870. The cubic root of 56722697 is about 384.2250042192.

The spelling of 56722697 in words is "fifty-six million, seven hundred twenty-two thousand, six hundred ninety-seven".