56720701 has 2 divisors, whose sum is σ = 56720702. Its totient is φ = 56720700.

The previous prime is 56720683. The next prime is 56720707. The reversal of 56720701 is 10702765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54243225 + 2477476 = 7365^2 + 1574^2 .

It is a cyclic number.

It is not a de Polignac number, because 56720701 - 2⁹ = 56720189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56720701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56720707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28360350 + 28360351.

It is an arithmetic number, because the mean of its divisors is an integer number (28360351).

Almost surely, 2^56720701 is an apocalyptic number.

It is an amenable number.

56720701 is a deficient number, since it is larger than the sum of its proper divisors (1).

56720701 is an equidigital number, since it uses as much as digits as its factorization.

56720701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 56720701 is about 7531.3146926682. The cubic root of 56720701 is about 384.2204973689.

The spelling of 56720701 in words is "fifty-six million, seven hundred twenty thousand, seven hundred one".