56640573 has 16 divisors (see below), whose sum is σ = 91540800. Its totient is φ = 34327440.

The previous prime is 56640569. The next prime is 56640581. The reversal of 56640573 is 37504665.

56640573 is a `hidden beast` number, since 5 + 6 + 640 + 5 + 7 + 3 = 666.

It is not a de Polignac number, because 56640573 - 2² = 56640569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56640523) 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 15 ways as a sum of consecutive naturals, for example, 95058 + ... + 95651.

It is an arithmetic number, because the mean of its divisors is an integer number (5721300).

Almost surely, 2^56640573 is an apocalyptic number.

It is an amenable number.

56640573 is a deficient number, since it is larger than the sum of its proper divisors (34900227).

56640573 is a wasteful number, since it uses less digits than its factorization.

56640573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190729 (or 190723 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 56640573 is about 7525.9931570524. The cubic root of 56640573 is about 384.0394856857.

The spelling of 56640573 in words is "fifty-six million, six hundred forty thousand, five hundred seventy-three".