680321082 has 64 divisors (see below), whose sum is σ = 1584737280. Its totient is φ = 190688256.

The previous prime is 680321053. The next prime is 680321119. The reversal of 680321082 is 280123086.

It is a super-2 number, since 2×680321082² = 925673549227301448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1178778 + ... + 1179354.

It is an arithmetic number, because the mean of its divisors is an integer number (24761520).

Almost surely, 2^680321082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680321082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792368640).

680321082 is an abundant number, since it is smaller than the sum of its proper divisors (904416198).

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

680321082 is a wasteful number, since it uses less digits than its factorization.

680321082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 680321082 is about 26082.9653605567. The cubic root of 680321082 is about 879.5043188164.

The spelling of 680321082 in words is "six hundred eighty million, three hundred twenty-one thousand, eighty-two".