680661330 has 32 divisors (see below), whose sum is σ = 1636113600. Its totient is φ = 181228992.

The previous prime is 680661329. The next prime is 680661343. The reversal of 680661330 is 33166086.

It is a junction number, because it is equal to n+sod(n) for n = 680661291 and 680661300.

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, 2556 + ... + 36984.

It is an arithmetic number, because the mean of its divisors is an integer number (51128550).

Almost surely, 2^680661330 is an apocalyptic number.

680661330 is an abundant number, since it is smaller than the sum of its proper divisors (955452270).

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

680661330 is a wasteful number, since it uses less digits than its factorization.

680661330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35098.

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

The square root of 680661330 is about 26089.4869631428. The cubic root of 680661330 is about 879.6509161214.

It can be divided in two parts, 68066 and 1330, that added together give a palindrome (69396).

The spelling of 680661330 in words is "six hundred eighty million, six hundred sixty-one thousand, three hundred thirty".