68117872 has 20 divisors (see below), whose sum is σ = 132654456. Its totient is φ = 33884480.

The previous prime is 68117867. The next prime is 68117873. The reversal of 68117872 is 27871186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68117873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7654 + ... + 13957.

Almost surely, 2^68117872 is an apocalyptic number.

It is an amenable number.

68117872 is a deficient number, since it is larger than the sum of its proper divisors (64536584).

68117872 is a wasteful number, since it uses less digits than its factorization.

68117872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21816 (or 21810 counting only the distinct ones).

The product of its digits is 37632, while the sum is 40.

The square root of 68117872 is about 8253.3551965246. The cubic root of 68117872 is about 408.4012136862.

The spelling of 68117872 in words is "sixty-eight million, one hundred seventeen thousand, eight hundred seventy-two".