68839164 has 36 divisors (see below), whose sum is σ = 178258080. Its totient is φ = 22386240.

The previous prime is 68839163. The next prime is 68839193. The reversal of 68839164 is 46193886.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68839163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21844 + ... + 24795.

Almost surely, 2^68839164 is an apocalyptic number.

It is an amenable number.

68839164 is an abundant number, since it is smaller than the sum of its proper divisors (109418916).

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

68839164 is a wasteful number, since it uses less digits than its factorization.

68839164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46690 (or 46685 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 68839164 is about 8296.9370251919. The cubic root of 68839164 is about 409.8376593064.

The spelling of 68839164 in words is "sixty-eight million, eight hundred thirty-nine thousand, one hundred sixty-four".