68450979 has 4 divisors (see below), whose sum is σ = 91267976. Its totient is φ = 45633984.

The previous prime is 68450971. The next prime is 68451001. The reversal of 68450979 is 97905486.

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

It is not a de Polignac number, because 68450979 - 2³ = 68450971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68450971) 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, 11408494 + ... + 11408499.

It is an arithmetic number, because the mean of its divisors is an integer number (22816994).

Almost surely, 2^68450979 is an apocalyptic number.

68450979 is a deficient number, since it is larger than the sum of its proper divisors (22816997).

68450979 is a wasteful number, since it uses less digits than its factorization.

68450979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22816996.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 68450979 is about 8273.5106816877. The cubic root of 68450979 is about 409.0658466487.

The spelling of 68450979 in words is "sixty-eight million, four hundred fifty thousand, nine hundred seventy-nine".