68922920 has 96 divisors (see below), whose sum is σ = 175880160. Its totient is φ = 24105600.

The previous prime is 68922901. The next prime is 68922941. The reversal of 68922920 is 2922986.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 422759 + ... + 422921.

It is an arithmetic number, because the mean of its divisors is an integer number (1832085).

Almost surely, 2^68922920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68922920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87940080).

68922920 is an abundant number, since it is smaller than the sum of its proper divisors (106957240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68922920 is a wasteful number, since it uses less digits than its factorization.

68922920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 68922920 is about 8301.9828956702. The cubic root of 68922920 is about 410.0038072222.

The spelling of 68922920 in words is "sixty-eight million, nine hundred twenty-two thousand, nine hundred twenty".