68390684 has 12 divisors (see below), whose sum is σ = 124887504. Its totient is φ = 32708544.

The previous prime is 68390659. The next prime is 68390701. The reversal of 68390684 is 48609386.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371597 + ... + 371780.

It is an arithmetic number, because the mean of its divisors is an integer number (10407292).

Almost surely, 2^68390684 is an apocalyptic number.

It is an amenable number.

68390684 is a deficient number, since it is larger than the sum of its proper divisors (56496820).

68390684 is a wasteful number, since it uses less digits than its factorization.

68390684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743404 (or 743402 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 68390684 is about 8269.8660206801. The cubic root of 68390684 is about 408.9457029046.

The spelling of 68390684 in words is "sixty-eight million, three hundred ninety thousand, six hundred eighty-four".