316612649 has 2 divisors, whose sum is σ = 316612650. Its totient is φ = 316612648.

The previous prime is 316612601. The next prime is 316612657. The reversal of 316612649 is 946216613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265918249 + 50694400 = 16307^2 + 7120^2 .

It is a cyclic number.

It is not a de Polignac number, because 316612649 - 2¹² = 316608553 is a prime.

It is not a weakly prime, because it can be changed into another prime (316612669) 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, 158306324 + 158306325.

It is an arithmetic number, because the mean of its divisors is an integer number (158306325).

Almost surely, 2^316612649 is an apocalyptic number.

It is an amenable number.

316612649 is a deficient number, since it is larger than the sum of its proper divisors (1).

316612649 is an equidigital number, since it uses as much as digits as its factorization.

316612649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 316612649 is about 17793.6125899155. The cubic root of 316612649 is about 681.5683587471.

The spelling of 316612649 in words is "three hundred sixteen million, six hundred twelve thousand, six hundred forty-nine".