68675879 has 2 divisors, whose sum is σ = 68675880. Its totient is φ = 68675878.

The previous prime is 68675753. The next prime is 68675891. The reversal of 68675879 is 97857686.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68675879 - 2¹² = 68671783 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68678879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34337939 + 34337940.

It is an arithmetic number, because the mean of its divisors is an integer number (34337940).

Almost surely, 2^68675879 is an apocalyptic number.

68675879 is a deficient number, since it is larger than the sum of its proper divisors (1).

68675879 is an equidigital number, since it uses as much as digits as its factorization.

68675879 is an evil number, because the sum of its binary digits is even.

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

The square root of 68675879 is about 8287.0911060516. The cubic root of 68675879 is about 409.5133607563.

The spelling of 68675879 in words is "sixty-eight million, six hundred seventy-five thousand, eight hundred seventy-nine".