68922880 has 160 divisors (see below), whose sum is σ = 189050400. Its totient is φ = 23887872.

The previous prime is 68922857. The next prime is 68922883. The reversal of 68922880 is 8822986.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68922883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632266 + ... + 632374.

It is an arithmetic number, because the mean of its divisors is an integer number (1181565).

Almost surely, 2^68922880 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 68922880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94525200).

68922880 is an abundant number, since it is smaller than the sum of its proper divisors (120127520).

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

68922880 is a wasteful number, since it uses less digits than its factorization.

68922880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 68922880 is about 8301.9804866068. The cubic root of 68922880 is about 410.0037279058.

The spelling of 68922880 in words is "sixty-eight million, nine hundred twenty-two thousand, eight hundred eighty".