656670601 has 2 divisors, whose sum is σ = 656670602. Its totient is φ = 656670600.

The previous prime is 656670593. The next prime is 656670607. The reversal of 656670601 is 106076656.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656589376 + 81225 = 25624^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 656670601 - 2³ = 656670593 is a prime.

It is not a weakly prime, because it can be changed into another prime (656670607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328335300 + 328335301.

It is an arithmetic number, because the mean of its divisors is an integer number (328335301).

Almost surely, 2^656670601 is an apocalyptic number.

It is an amenable number.

656670601 is a deficient number, since it is larger than the sum of its proper divisors (1).

656670601 is an equidigital number, since it uses as much as digits as its factorization.

656670601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 656670601 is about 25625.5848908859. The cubic root of 656670601 is about 869.1922749423.

The spelling of 656670601 in words is "six hundred fifty-six million, six hundred seventy thousand, six hundred one".