315664 has 20 divisors (see below), whose sum is σ = 620620. Its totient is φ = 155520.

The previous prime is 315643. The next prime is 315671. The reversal of 315664 is 466513.

It can be written as a sum of positive squares in 2 ways, for example, as 85264 + 230400 = 292^2 + 480^2 .

It is an unprimeable number.

315664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654 + ... + 1834.

It is an arithmetic number, because the mean of its divisors is an integer number (31031).

2³¹⁵⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

315664 is a deficient number, since it is larger than the sum of its proper divisors (304956).

315664 is a wasteful number, since it uses less digits than its factorization.

315664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 292 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 315664 is about 561.8398348284. The cubic root of 315664 is about 68.0886962535.

It can be divided in two parts, 315 and 664, that added together give a palindrome (979).

The spelling of 315664 in words is "three hundred fifteen thousand, six hundred sixty-four".