656363867 has 2 divisors, whose sum is σ = 656363868. Its totient is φ = 656363866.

The previous prime is 656363861. The next prime is 656363879. The reversal of 656363867 is 768363656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656363867 - 2⁶ = 656363803 is a prime.

It is not a weakly prime, because it can be changed into another prime (656363861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328181933 + 328181934.

It is an arithmetic number, because the mean of its divisors is an integer number (328181934).

Almost surely, 2^656363867 is an apocalyptic number.

656363867 is a deficient number, since it is larger than the sum of its proper divisors (1).

656363867 is an equidigital number, since it uses as much as digits as its factorization.

656363867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 50.

The square root of 656363867 is about 25619.5992747740. The cubic root of 656363867 is about 869.0569192325.

The spelling of 656363867 in words is "six hundred fifty-six million, three hundred sixty-three thousand, eight hundred sixty-seven".