68999975 has 24 divisors (see below), whose sum is σ = 94493952. Its totient is φ = 49560800.

The previous prime is 68999971. The next prime is 68999981. The reversal of 68999975 is 57999986.

It is not a de Polignac number, because 68999975 - 2² = 68999971 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 (68999971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21314 + ... + 24336.

It is an arithmetic number, because the mean of its divisors is an integer number (3937248).

Almost surely, 2^68999975 is an apocalyptic number.

68999975 is a deficient number, since it is larger than the sum of its proper divisors (25493977).

68999975 is a wasteful number, since it uses less digits than its factorization.

68999975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127 (or 3122 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 62.

The square root of 68999975 is about 8306.6223580948. The cubic root of 68999975 is about 410.1565434344.

The spelling of 68999975 in words is "sixty-eight million, nine hundred ninety-nine thousand, nine hundred seventy-five".