656064979 has 2 divisors, whose sum is σ = 656064980. Its totient is φ = 656064978.

The previous prime is 656064967. The next prime is 656065021. The reversal of 656064979 is 979460656.

656064979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656064979 - 2⁵ = 656064947 is a prime.

It is not a weakly prime, because it can be changed into another prime (656064179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328032489 + 328032490.

It is an arithmetic number, because the mean of its divisors is an integer number (328032490).

Almost surely, 2^656064979 is an apocalyptic number.

656064979 is a deficient number, since it is larger than the sum of its proper divisors (1).

656064979 is an equidigital number, since it uses as much as digits as its factorization.

656064979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 656064979 is about 25613.7654201798. The cubic root of 656064979 is about 868.9249852373.

The spelling of 656064979 in words is "six hundred fifty-six million, sixty-four thousand, nine hundred seventy-nine".