68923857 has 8 divisors (see below), whose sum is σ = 91989184. Its totient is φ = 45903888.

The previous prime is 68923853. The next prime is 68923867. The reversal of 68923857 is 75832986.

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

It is not a de Polignac number, because 68923857 - 2² = 68923853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68923853) 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, 7618 + ... + 13995.

It is an arithmetic number, because the mean of its divisors is an integer number (11498648).

Almost surely, 2^68923857 is an apocalyptic number.

It is an amenable number.

68923857 is a deficient number, since it is larger than the sum of its proper divisors (23065327).

68923857 is a wasteful number, since it uses less digits than its factorization.

68923857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22679.

The product of its digits is 725760, while the sum is 48.

The square root of 68923857 is about 8302.0393277797. The cubic root of 68923857 is about 410.0056652003.

The spelling of 68923857 in words is "sixty-eight million, nine hundred twenty-three thousand, eight hundred fifty-seven".