56742657 has 8 divisors (see below), whose sum is σ = 75691680. Its totient is φ = 37811040.

The previous prime is 56742643. The next prime is 56742689. The reversal of 56742657 is 75624765.

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

It is not a de Polignac number, because 56742657 - 2⁴ = 56742641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56742557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10557 + ... + 14997.

It is an arithmetic number, because the mean of its divisors is an integer number (9461460).

Almost surely, 2^56742657 is an apocalyptic number.

It is an amenable number.

56742657 is a deficient number, since it is larger than the sum of its proper divisors (18949023).

56742657 is a wasteful number, since it uses less digits than its factorization.

56742657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703.

The product of its digits is 352800, while the sum is 42.

The square root of 56742657 is about 7532.7721988654. The cubic root of 56742657 is about 384.2700669078.

The spelling of 56742657 in words is "fifty-six million, seven hundred forty-two thousand, six hundred fifty-seven".