680030320 has 40 divisors (see below), whose sum is σ = 1584586080. Its totient is φ = 271407360.

The previous prime is 680030297. The next prime is 680030321. The reversal of 680030320 is 23030086.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×680030320² = 924882472238604800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 680030291 and 680030300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680030321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27661 + ... + 46099.

It is an arithmetic number, because the mean of its divisors is an integer number (39614652).

Almost surely, 2^680030320 is an apocalyptic number.

It is an amenable number.

680030320 is an abundant number, since it is smaller than the sum of its proper divisors (904555760).

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

680030320 is a wasteful number, since it uses less digits than its factorization.

680030320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18913 (or 18907 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 680030320 is about 26077.3909737918. The cubic root of 680030320 is about 879.3790040291.

The spelling of 680030320 in words is "six hundred eighty million, thirty thousand, three hundred twenty".