316649997 has 6 divisors (see below), whose sum is σ = 457383342. Its totient is φ = 211099992.

The previous prime is 316649941. The next prime is 316650017. The reversal of 316649997 is 799946613.

316649997 is a `hidden beast` number, since 3 + 1 + 66 + 499 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 284057316 + 32592681 = 16854^2 + 5709^2 .

It is not a de Polignac number, because 316649997 - 2⁸ = 316649741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316649917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17591658 + ... + 17591675.

It is an arithmetic number, because the mean of its divisors is an integer number (76230557).

Almost surely, 2^316649997 is an apocalyptic number.

It is an amenable number.

316649997 is a deficient number, since it is larger than the sum of its proper divisors (140733345).

316649997 is a wasteful number, since it uses less digits than its factorization.

316649997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35183339 (or 35183336 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 316649997 is about 17794.6620366895. The cubic root of 316649997 is about 681.5951572281.

The spelling of 316649997 in words is "three hundred sixteen million, six hundred forty-nine thousand, nine hundred ninety-seven".