68678975 has 12 divisors (see below), whose sum is σ = 85522800. Its totient is φ = 54710400.

The previous prime is 68678971. The next prime is 68678983. The reversal of 68678975 is 57987686.

It is a happy number.

It is not a de Polignac number, because 68678975 - 2² = 68678971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68678975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68678971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326 + ... + 11724.

It is an arithmetic number, because the mean of its divisors is an integer number (7126900).

Almost surely, 2^68678975 is an apocalyptic number.

68678975 is a deficient number, since it is larger than the sum of its proper divisors (16843825).

68678975 is a wasteful number, since it uses less digits than its factorization.

68678975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11650 (or 11645 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 56.

The square root of 68678975 is about 8287.2779004930. The cubic root of 68678975 is about 409.5195144662.

The spelling of 68678975 in words is "sixty-eight million, six hundred seventy-eight thousand, nine hundred seventy-five".