68916879 has 8 divisors (see below), whose sum is σ = 102099120. Its totient is φ = 45944568.

The previous prime is 68916839. The next prime is 68916893. The reversal of 68916879 is 97861986.

It is not a de Polignac number, because 68916879 - 2²³ = 60528271 is a prime.

It is a super-2 number, since 2×68916879² = 9499072422201282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68916839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276212 + ... + 1276265.

It is an arithmetic number, because the mean of its divisors is an integer number (12762390).

Almost surely, 2^68916879 is an apocalyptic number.

68916879 is a deficient number, since it is larger than the sum of its proper divisors (33182241).

68916879 is a wasteful number, since it uses less digits than its factorization.

68916879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552486 (or 2552480 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 68916879 is about 8301.6190589547. The cubic root of 68916879 is about 409.9918281139.

The spelling of 68916879 in words is "sixty-eight million, nine hundred sixteen thousand, eight hundred seventy-nine".