56720744 has 8 divisors (see below), whose sum is σ = 106351410. Its totient is φ = 28360368.

The previous prime is 56720743. The next prime is 56720779. The reversal of 56720744 is 44702765.

It can be written as a sum of positive squares in only one way, i.e., 48135844 + 8584900 = 6938^2 + 2930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (56720743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3545039 + ... + 3545054.

Almost surely, 2^56720744 is an apocalyptic number.

It is an amenable number.

56720744 is a deficient number, since it is larger than the sum of its proper divisors (49630666).

56720744 is a wasteful number, since it uses less digits than its factorization.

56720744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7090099 (or 7090095 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 56720744 is about 7531.3175474149. The cubic root of 56720744 is about 384.2205944615.

The spelling of 56720744 in words is "fifty-six million, seven hundred twenty thousand, seven hundred forty-four".