316980665 has 16 divisors (see below), whose sum is σ = 391431312. Its totient is φ = 246242304.

The previous prime is 316980647. The next prime is 316980679. The reversal of 316980665 is 566089613.

It can be written as a sum of positive squares in 8 ways, for example, as 35378704 + 281601961 = 5948^2 + 16781^2 .

It is a cyclic number.

It is not a de Polignac number, because 316980665 - 2⁸ = 316980409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112757 + ... + 115533.

It is an arithmetic number, because the mean of its divisors is an integer number (24464457).

Almost surely, 2^316980665 is an apocalyptic number.

It is an amenable number.

316980665 is a deficient number, since it is larger than the sum of its proper divisors (74450647).

316980665 is a wasteful number, since it uses less digits than its factorization.

316980665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 316980665 is about 17803.9508255892. The cubic root of 316980665 is about 681.8323310815.

The spelling of 316980665 in words is "three hundred sixteen million, nine hundred eighty thousand, six hundred sixty-five".