656370601 has 4 divisors (see below), whose sum is σ = 679004100. Its totient is φ = 633737104.

The previous prime is 656370593. The next prime is 656370607. The reversal of 656370601 is 106073656.

It is a happy number.

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 277056025 + 379314576 = 16645^2 + 19476^2 .

It is a cyclic number.

It is not a de Polignac number, because 656370601 - 2³ = 656370593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656370607) 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, 11316706 + ... + 11316763.

It is an arithmetic number, because the mean of its divisors is an integer number (169751025).

Almost surely, 2^656370601 is an apocalyptic number.

It is an amenable number.

656370601 is a deficient number, since it is larger than the sum of its proper divisors (22633499).

656370601 is a wasteful number, since it uses less digits than its factorization.

656370601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22633498.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 656370601 is about 25619.7306972575. The cubic root of 656370601 is about 869.0598912676.

The spelling of 656370601 in words is "six hundred fifty-six million, three hundred seventy thousand, six hundred one".