68004979 has 8 divisors (see below), whose sum is σ = 80227328. Its totient is φ = 56409480.

The previous prime is 68004967. The next prime is 68004983. The reversal of 68004979 is 97940086.

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

It is a cyclic number.

It is not a de Polignac number, because 68004979 - 2⁹ = 68004467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68004919) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 156477 + ... + 156910.

It is an arithmetic number, because the mean of its divisors is an integer number (10028416).

Almost surely, 2^68004979 is an apocalyptic number.

68004979 is a deficient number, since it is larger than the sum of its proper divisors (12222349).

68004979 is a wasteful number, since it uses less digits than its factorization.

68004979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313425.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 68004979 is about 8246.5131419285. The cubic root of 68004979 is about 408.1754719882.

The spelling of 68004979 in words is "sixty-eight million, four thousand, nine hundred seventy-nine".