56720207 has 2 divisors, whose sum is σ = 56720208. Its totient is φ = 56720206.

The previous prime is 56720203. The next prime is 56720239. The reversal of 56720207 is 70202765.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56720207 - 2² = 56720203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56720207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56720203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28360103 + 28360104.

It is an arithmetic number, because the mean of its divisors is an integer number (28360104).

Almost surely, 2^56720207 is an apocalyptic number.

56720207 is a deficient number, since it is larger than the sum of its proper divisors (1).

56720207 is an equidigital number, since it uses as much as digits as its factorization.

56720207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 56720207 is about 7531.2818961980. The cubic root of 56720207 is about 384.2193819297.

The spelling of 56720207 in words is "fifty-six million, seven hundred twenty thousand, two hundred seven".