315668 has 12 divisors (see below), whose sum is σ = 563220. Its totient is φ = 154752.

The previous prime is 315643. The next prime is 315671. The reversal of 315668 is 866513.

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 169744 = 382^2 + 412^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 315668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533 + ... + 956.

It is an arithmetic number, because the mean of its divisors is an integer number (46935).

2³¹⁵⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

315668 is a deficient number, since it is larger than the sum of its proper divisors (247552).

315668 is a wasteful number, since it uses less digits than its factorization.

315668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1544 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 315668 is about 561.8433945505. The cubic root of 315668 is about 68.0889838522.

The spelling of 315668 in words is "three hundred fifteen thousand, six hundred sixty-eight".