68795991 has 48 divisors (see below), whose sum is σ = 117700128. Its totient is φ = 38246400.

The previous prime is 68795963. The next prime is 68796011. The reversal of 68795991 is 19959786.

It is not a de Polignac number, because 68795991 - 2⁵ = 68795959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68795591) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68505 + ... + 69501.

It is an arithmetic number, because the mean of its divisors is an integer number (2452086).

Almost surely, 2^68795991 is an apocalyptic number.

68795991 is a deficient number, since it is larger than the sum of its proper divisors (48904137).

68795991 is a wasteful number, since it uses less digits than its factorization.

68795991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1069 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 68795991 is about 8294.3348738763. The cubic root of 68795991 is about 409.7519637978.

The spelling of 68795991 in words is "sixty-eight million, seven hundred ninety-five thousand, nine hundred ninety-one".