680525980 has 24 divisors (see below), whose sum is σ = 1513170288. Its totient is φ = 256197888.

The previous prime is 680525969. The next prime is 680525999. The reversal of 680525980 is 89525086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000434 + ... + 1001113.

It is an arithmetic number, because the mean of its divisors is an integer number (63048762).

Almost surely, 2^680525980 is an apocalyptic number.

It is an amenable number.

680525980 is an abundant number, since it is smaller than the sum of its proper divisors (832644308).

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

680525980 is a wasteful number, since it uses less digits than its factorization.

680525980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001573 (or 2001571 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 680525980 is about 26086.8928774586. The cubic root of 680525980 is about 879.5926058483.

The spelling of 680525980 in words is "six hundred eighty million, five hundred twenty-five thousand, nine hundred eighty".