68904859 has 8 divisors (see below), whose sum is σ = 73053360. Its totient is φ = 64766976.

The previous prime is 68904851. The next prime is 68904881. The reversal of 68904859 is 95840986.

It is a happy number.

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 68904859 - 2³ = 68904851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68904851) 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, 13612 + ... + 17974.

It is an arithmetic number, because the mean of its divisors is an integer number (9131670).

Almost surely, 2^68904859 is an apocalyptic number.

68904859 is a deficient number, since it is larger than the sum of its proper divisors (4148501).

68904859 is a wasteful number, since it uses less digits than its factorization.

68904859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 68904859 is about 8300.8950722196. The cubic root of 68904859 is about 409.9679907590.

The spelling of 68904859 in words is "sixty-eight million, nine hundred four thousand, eight hundred fifty-nine".