316663693 has 2 divisors, whose sum is σ = 316663694. Its totient is φ = 316663692.

The previous prime is 316663681. The next prime is 316663703. The reversal of 316663693 is 396366613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314778564 + 1885129 = 17742^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 316663693 - 2²⁵ = 283109261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316663603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158331846 + 158331847.

It is an arithmetic number, because the mean of its divisors is an integer number (158331847).

Almost surely, 2^316663693 is an apocalyptic number.

It is an amenable number.

316663693 is a deficient number, since it is larger than the sum of its proper divisors (1).

316663693 is an equidigital number, since it uses as much as digits as its factorization.

316663693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 43.

The square root of 316663693 is about 17795.0468670358. The cubic root of 316663693 is about 681.6049840535.

The spelling of 316663693 in words is "three hundred sixteen million, six hundred sixty-three thousand, six hundred ninety-three".