316660447 has 2 divisors, whose sum is σ = 316660448. Its totient is φ = 316660446.

The previous prime is 316660433. The next prime is 316660451. The reversal of 316660447 is 744066613.

It is a strong prime.

It is an emirp because it is prime and its reverse (744066613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316660447 - 2¹⁵ = 316627679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316660417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158330223 + 158330224.

It is an arithmetic number, because the mean of its divisors is an integer number (158330224).

Almost surely, 2^316660447 is an apocalyptic number.

316660447 is a deficient number, since it is larger than the sum of its proper divisors (1).

316660447 is an equidigital number, since it uses as much as digits as its factorization.

316660447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 316660447 is about 17794.9556616475. The cubic root of 316660447 is about 681.6026550871.

The spelling of 316660447 in words is "three hundred sixteen million, six hundred sixty thousand, four hundred forty-seven".