306868 has 6 divisors (see below), whose sum is σ = 537026. Its totient is φ = 153432.

The previous prime is 306857. The next prime is 306871. The reversal of 306868 is 868603.

It can be written as a sum of positive squares in only one way, i.e., 289444 + 17424 = 538^2 + 132^2 .

It is a congruent number.

It is an unprimeable number.

306868 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 as a sum of consecutive naturals, namely, 38355 + ... + 38362.

2³⁰⁶⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

306868 is a deficient number, since it is larger than the sum of its proper divisors (230158).

306868 is a wasteful number, since it uses less digits than its factorization.

306868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76721 (or 76719 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 306868 is about 553.9566770064. The cubic root of 306868 is about 67.4502972015.

It can be divided in two parts, 3068 and 68, that added together give a square (3136 = 56²).

The spelling of 306868 in words is "three hundred six thousand, eight hundred sixty-eight".