68558979 has 8 divisors (see below), whose sum is σ = 91458832. Its totient is φ = 45682560.

The previous prime is 68558953. The next prime is 68558989. The reversal of 68558979 is 97985586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68558979 - 2⁷ = 68558851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68558939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2799 + ... + 12039.

It is an arithmetic number, because the mean of its divisors is an integer number (11432354).

Almost surely, 2^68558979 is an apocalyptic number.

68558979 is a deficient number, since it is larger than the sum of its proper divisors (22899853).

68558979 is a wasteful number, since it uses less digits than its factorization.

68558979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11717.

The product of its digits is 5443200, while the sum is 57.

The square root of 68558979 is about 8280.0349636943. The cubic root of 68558979 is about 409.2808710724.

The spelling of 68558979 in words is "sixty-eight million, five hundred fifty-eight thousand, nine hundred seventy-nine".