680899210 has 16 divisors (see below), whose sum is σ = 1225939176. Its totient is φ = 272288448.

The previous prime is 680899187. The next prime is 680899213. The reversal of 680899210 is 12998086.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 654489889 + 26409321 = 25583^2 + 5139^2 .

It is not an unprimeable number, because it can be changed into a prime (680899213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49444 + ... + 61696.

Almost surely, 2^680899210 is an apocalyptic number.

680899210 is a deficient number, since it is larger than the sum of its proper divisors (545039966).

680899210 is a wasteful number, since it uses less digits than its factorization.

680899210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17817.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 680899210 is about 26094.0454893449. The cubic root of 680899210 is about 879.7533787211.

The spelling of 680899210 in words is "six hundred eighty million, eight hundred ninety-nine thousand, two hundred ten".