68319715 has 4 divisors (see below), whose sum is σ = 81983664. Its totient is φ = 54655768.

The previous prime is 68319709. The next prime is 68319721. The reversal of 68319715 is 51791386.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68319709) and next prime (68319721).

It is a cyclic number.

It is not a de Polignac number, because 68319715 - 2²³ = 59931107 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6831967 + ... + 6831976.

It is an arithmetic number, because the mean of its divisors is an integer number (20495916).

Almost surely, 2^68319715 is an apocalyptic number.

68319715 is a deficient number, since it is larger than the sum of its proper divisors (13663949).

68319715 is a wasteful number, since it uses less digits than its factorization.

68319715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13663948.

The product of its digits is 45360, while the sum is 40.

The square root of 68319715 is about 8265.5740877449. The cubic root of 68319715 is about 408.8041996542.

The spelling of 68319715 in words is "sixty-eight million, three hundred nineteen thousand, seven hundred fifteen".