318768697 has 8 divisors (see below), whose sum is σ = 343487816. Its totient is φ = 294077952.

The previous prime is 318768677. The next prime is 318768733. The reversal of 318768697 is 796867813.

It can be written as a sum of positive squares in 4 ways, for example, as 3493161 + 315275536 = 1869^2 + 17756^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318768697 is a prime.

It is a super-2 number, since 2×318768697² = 203226964374155618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318768607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20143 + ... + 32299.

It is an arithmetic number, because the mean of its divisors is an integer number (42935977).

Almost surely, 2^318768697 is an apocalyptic number.

It is an amenable number.

318768697 is a deficient number, since it is larger than the sum of its proper divisors (24719119).

318768697 is a wasteful number, since it uses less digits than its factorization.

318768697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14187.

The product of its digits is 3048192, while the sum is 55.

The square root of 318768697 is about 17854.0946844134. The cubic root of 318768697 is about 683.1119599921. Note that the first 3 decimals are identical.

The spelling of 318768697 in words is "three hundred eighteen million, seven hundred sixty-eight thousand, six hundred ninety-seven".