976789613 has 2 divisors, whose sum is σ = 976789614. Its totient is φ = 976789612.

The previous prime is 976789609. The next prime is 976789661. The reversal of 976789613 is 316987679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972067684 + 4721929 = 31178^2 + 2173^2 .

It is a cyclic number.

It is not a de Polignac number, because 976789613 - 2² = 976789609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (976780613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488394806 + 488394807.

It is an arithmetic number, because the mean of its divisors is an integer number (488394807).

Almost surely, 2^976789613 is an apocalyptic number.

It is an amenable number.

976789613 is a deficient number, since it is larger than the sum of its proper divisors (1).

976789613 is an equidigital number, since it uses as much as digits as its factorization.

976789613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 56.

The square root of 976789613 is about 31253.6335967516. The cubic root of 976789613 is about 992.2025623272.

The spelling of 976789613 in words is "nine hundred seventy-six million, seven hundred eighty-nine thousand, six hundred thirteen".