56600645 has 4 divisors (see below), whose sum is σ = 67920780. Its totient is φ = 45280512.

The previous prime is 56600641. The next prime is 56600653. The reversal of 56600645 is 54600665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15358561 + 41242084 = 3919^2 + 6422^2 .

It is a cyclic number.

It is not a de Polignac number, because 56600645 - 2² = 56600641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56600641) 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, 5660060 + ... + 5660069.

It is an arithmetic number, because the mean of its divisors is an integer number (16980195).

Almost surely, 2^56600645 is an apocalyptic number.

It is an amenable number.

56600645 is a deficient number, since it is larger than the sum of its proper divisors (11320135).

56600645 is a wasteful number, since it uses less digits than its factorization.

56600645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320134.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 56600645 is about 7523.3400162428. The cubic root of 56600645 is about 383.9492233389.

The spelling of 56600645 in words is "fifty-six million, six hundred thousand, six hundred forty-five".