68912775 has 30 divisors (see below), whose sum is σ = 127654032. Its totient is φ = 36752400.

The previous prime is 68912771. The next prime is 68912797. The reversal of 68912775 is 57721986.

It is not a de Polignac number, because 68912775 - 2² = 68912771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68912775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68912771) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 14991 + ... + 19040.

Almost surely, 2^68912775 is an apocalyptic number.

68912775 is a deficient number, since it is larger than the sum of its proper divisors (58741257).

68912775 is a wasteful number, since it uses less digits than its factorization.

68912775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34053 (or 34039 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 68912775 is about 8301.3718745759. The cubic root of 68912775 is about 409.9836896149.

The spelling of 68912775 in words is "sixty-eight million, nine hundred twelve thousand, seven hundred seventy-five".