680422920 has 64 divisors (see below), whose sum is σ = 2049304320. Its totient is φ = 180731904.

The previous prime is 680422913. The next prime is 680422993. The reversal of 680422920 is 29224086.

It is a super-2 number, since 2×680422920² = 925950700122652800, which contains 22 as substring.

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, 19809 + ... + 41871.

It is an arithmetic number, because the mean of its divisors is an integer number (32020380).

Almost surely, 2^680422920 is an apocalyptic number.

680422920 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 680422920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1024652160).

680422920 is an abundant number, since it is smaller than the sum of its proper divisors (1368881400).

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

680422920 is a wasteful number, since it uses less digits than its factorization.

680422920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22334 (or 22330 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 680422920 is about 26084.9174811806. The cubic root of 680422920 is about 879.5482012784.

The spelling of 680422920 in words is "six hundred eighty million, four hundred twenty-two thousand, nine hundred twenty".