68905368 has 72 divisors (see below), whose sum is σ = 217098180. Its totient is φ = 19686240.

The previous prime is 68905367. The next prime is 68905391. The reversal of 68905368 is 86350986.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68905367) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6238 + ... + 13293.

Almost surely, 2^68905368 is an apocalyptic number.

It is an amenable number.

68905368 is an abundant number, since it is smaller than the sum of its proper divisors (148192812).

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

68905368 is a wasteful number, since it uses less digits than its factorization.

68905368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19557 (or 19543 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 68905368 is about 8300.9257315073. The cubic root of 68905368 is about 409.9690002340.

The spelling of 68905368 in words is "sixty-eight million, nine hundred five thousand, three hundred sixty-eight".