56700644 has 144 divisors (see below), whose sum is σ = 144412800. Its totient is φ = 19192320.

The previous prime is 56700607. The next prime is 56700647. The reversal of 56700644 is 44600765.

56700644 = T₂₉₄₇ + T₂₉₄₈ + ... + T₂₉₅₉.

56700644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 56700644.

It is not an unprimeable number, because it can be changed into a prime (56700647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3335324 + ... + 3335340.

Almost surely, 2^56700644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56700644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72206400).

56700644 is an abundant number, since it is smaller than the sum of its proper divisors (87712156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56700644 is a wasteful number, since it uses less digits than its factorization.

56700644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 56700644 is about 7529.9830013088. The cubic root of 56700644 is about 384.1752039757.

The spelling of 56700644 in words is "fifty-six million, seven hundred thousand, six hundred forty-four".