680731202 has 18 divisors (see below), whose sum is σ = 1078778259. Its totient is φ = 322119540.

The previous prime is 680731199. The next prime is 680731231. The reversal of 680731202 is 202137086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 340365601 + 340365601 = 18449^2 + 18449^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18449.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 700577 + ... + 701547.

Almost surely, 2^680731202 is an apocalyptic number.

680731202 is a deficient number, since it is larger than the sum of its proper divisors (398047057).

680731202 is an frugal number, since it uses more digits than its factorization.

680731202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 680731202 is about 26090.8260122212. The cubic root of 680731202 is about 879.6810147246.

Adding to 680731202 its reverse (202137086), we get a palindrome (882868288).

The spelling of 680731202 in words is "six hundred eighty million, seven hundred thirty-one thousand, two hundred two".