680989202 has 8 divisors (see below), whose sum is σ = 1021866300. Its totient is φ = 340367104.

The previous prime is 680989193. The next prime is 680989219. The reversal of 680989202 is 202989086.

It can be written as a sum of positive squares in 2 ways, for example, as 593360881 + 87628321 = 24359^2 + 9361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56927 + ... + 67842.

Almost surely, 2^680989202 is an apocalyptic number.

680989202 is a deficient number, since it is larger than the sum of its proper divisors (340877098).

680989202 is a wasteful number, since it uses less digits than its factorization.

680989202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127500.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 680989202 is about 26095.7698104501. The cubic root of 680989202 is about 879.7921349605.

The spelling of 680989202 in words is "six hundred eighty million, nine hundred eighty-nine thousand, two hundred two".