68345904 has 40 divisors (see below), whose sum is σ = 192612672. Its totient is φ = 20710720.

The previous prime is 68345897. The next prime is 68345911. The reversal of 68345904 is 40954386.

It is an interprime number because it is at equal distance from previous prime (68345897) and next prime (68345911).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64194 + ... + 65249.

Almost surely, 2^68345904 is an apocalyptic number.

It is an amenable number.

68345904 is an abundant number, since it is smaller than the sum of its proper divisors (124266768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68345904 is a wasteful number, since it uses less digits than its factorization.

68345904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129465 (or 129459 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 68345904 is about 8267.1581574323. The cubic root of 68345904 is about 408.8564286263.

The spelling of 68345904 in words is "sixty-eight million, three hundred forty-five thousand, nine hundred four".