68379913 has 4 divisors (see below), whose sum is σ = 78148480. Its totient is φ = 58611348.

The previous prime is 68379907. The next prime is 68379931. The reversal of 68379913 is 31997386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68379913 - 2⁹ = 68379401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68379953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4884273 + ... + 4884286.

It is an arithmetic number, because the mean of its divisors is an integer number (19537120).

Almost surely, 2^68379913 is an apocalyptic number.

It is an amenable number.

68379913 is a deficient number, since it is larger than the sum of its proper divisors (9768567).

68379913 is an equidigital number, since it uses as much as digits as its factorization.

68379913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768566.

The product of its digits is 244944, while the sum is 46.

The square root of 68379913 is about 8269.2147752976. The cubic root of 68379913 is about 408.9242331899.

The spelling of 68379913 in words is "sixty-eight million, three hundred seventy-nine thousand, nine hundred thirteen".