68831217 has 48 divisors (see below), whose sum is σ = 123235840. Its totient is φ = 36049536.

The previous prime is 68831179. The next prime is 68831219. The reversal of 68831217 is 71213886.

It is not a de Polignac number, because 68831217 - 2⁸ = 68830961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68831219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187368 + ... + 187734.

Almost surely, 2^68831217 is an apocalyptic number.

It is an amenable number.

68831217 is a deficient number, since it is larger than the sum of its proper divisors (54404623).

68831217 is a wasteful number, since it uses less digits than its factorization.

68831217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 619 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 68831217 is about 8296.4580996953. The cubic root of 68831217 is about 409.8218877358.

It can be divided in two parts, 6883 and 1217, that added together give a square (8100 = 90²).

The spelling of 68831217 in words is "sixty-eight million, eight hundred thirty-one thousand, two hundred seventeen".