68733687 has 12 divisors (see below), whose sum is σ = 100734200. Its totient is φ = 41656560.

The previous prime is 68733653. The next prime is 68733701. The reversal of 68733687 is 78633786.

It is not a de Polignac number, because 68733687 - 2¹⁴ = 68717303 is a prime.

It is a super-2 number, since 2×68733687² = 9448639457227938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68733487) 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, 94312 + ... + 95037.

Almost surely, 2^68733687 is an apocalyptic number.

68733687 is a deficient number, since it is larger than the sum of its proper divisors (32000513).

68733687 is a wasteful number, since it uses less digits than its factorization.

68733687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189374 (or 189363 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 68733687 is about 8290.5782066150. The cubic root of 68733687 is about 409.6282313121.

Subtracting 68733687 from its reverse (78633786), we obtain a palindrome (9900099).

The spelling of 68733687 in words is "sixty-eight million, seven hundred thirty-three thousand, six hundred eighty-seven".