68332920 has 64 divisors (see below), whose sum is σ = 205770240. Its totient is φ = 18153600.

The previous prime is 68332919. The next prime is 68332933. The reversal of 68332920 is 2923386.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36405 + ... + 38235.

It is an arithmetic number, because the mean of its divisors is an integer number (3215160).

Almost surely, 2^68332920 is an apocalyptic number.

68332920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68332920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102885120).

68332920 is an abundant number, since it is smaller than the sum of its proper divisors (137437320).

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

68332920 is a wasteful number, since it uses less digits than its factorization.

68332920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 68332920 is about 8266.3728442407. The cubic root of 68332920 is about 408.8305361794.

The spelling of 68332920 in words is "sixty-eight million, three hundred thirty-two thousand, nine hundred twenty".