68691393 has 12 divisors (see below), whose sum is σ = 101332608. Its totient is φ = 44819640.

The previous prime is 68691383. The next prime is 68691439. The reversal of 68691393 is 39319686.

It is not a de Polignac number, because 68691393 - 2⁵ = 68691361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68691313) 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, 80773 + ... + 81618.

It is an arithmetic number, because the mean of its divisors is an integer number (8444384).

Almost surely, 2^68691393 is an apocalyptic number.

It is an amenable number.

68691393 is a deficient number, since it is larger than the sum of its proper divisors (32641215).

68691393 is a wasteful number, since it uses less digits than its factorization.

68691393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162444 (or 162441 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 68691393 is about 8288.0270873109. The cubic root of 68691393 is about 409.5441950271.

The spelling of 68691393 in words is "sixty-eight million, six hundred ninety-one thousand, three hundred ninety-three".