68816775 has 12 divisors (see below), whose sum is σ = 113777192. Its totient is φ = 36702240.

The previous prime is 68816773. The next prime is 68816779. The reversal of 68816775 is 57761886.

It is not a de Polignac number, because 68816775 - 2¹ = 68816773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68816773) 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, 458704 + ... + 458853.

Almost surely, 2^68816775 is an apocalyptic number.

68816775 is a deficient number, since it is larger than the sum of its proper divisors (44960417).

68816775 is a wasteful number, since it uses less digits than its factorization.

68816775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917570 (or 917565 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 68816775 is about 8295.5876826178. The cubic root of 68816775 is about 409.7932231174.

The spelling of 68816775 in words is "sixty-eight million, eight hundred sixteen thousand, seven hundred seventy-five".