977717317 has 2 divisors, whose sum is σ = 977717318. Its totient is φ = 977717316.

The previous prime is 977717287. The next prime is 977717383. The reversal of 977717317 is 713717779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545035716 + 432681601 = 23346^2 + 20801^2 .

It is a cyclic number.

It is not a de Polignac number, because 977717317 - 2²³ = 969328709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977718317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488858658 + 488858659.

It is an arithmetic number, because the mean of its divisors is an integer number (488858659).

Almost surely, 2^977717317 is an apocalyptic number.

It is an amenable number.

977717317 is a deficient number, since it is larger than the sum of its proper divisors (1).

977717317 is an equidigital number, since it uses as much as digits as its factorization.

977717317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453789, while the sum is 49.

The square root of 977717317 is about 31268.4716127923. The cubic root of 977717317 is about 992.5165770759.

The spelling of 977717317 in words is "nine hundred seventy-seven million, seven hundred seventeen thousand, three hundred seventeen".