68693888 has 16 divisors (see below), whose sum is σ = 136851360. Its totient is φ = 34346880.

The previous prime is 68693887. The next prime is 68693909. The reversal of 68693888 is 88839686.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68693881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268208 + ... + 268463.

It is an arithmetic number, because the mean of its divisors is an integer number (8553210).

Almost surely, 2^68693888 is an apocalyptic number.

It is an amenable number.

68693888 is a deficient number, since it is larger than the sum of its proper divisors (68157472).

68693888 is an equidigital number, since it uses as much as digits as its factorization.

68693888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536685 (or 536673 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 56.

The square root of 68693888 is about 8288.1776042747. The cubic root of 68693888 is about 409.5491534377.

The spelling of 68693888 in words is "sixty-eight million, six hundred ninety-three thousand, eight hundred eighty-eight".