680552756 has 12 divisors (see below), whose sum is σ = 1282580292. Its totient is φ = 314101248.

The previous prime is 680552749. The next prime is 680552759. The reversal of 680552756 is 657255086.

It can be written as a sum of positive squares in 2 ways, for example, as 32035600 + 648517156 = 5660^2 + 25466^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680552759) by changing a digit.

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, 6543725 + ... + 6543828.

It is an arithmetic number, because the mean of its divisors is an integer number (106881691).

Almost surely, 2^680552756 is an apocalyptic number.

It is an amenable number.

680552756 is a deficient number, since it is larger than the sum of its proper divisors (602027536).

680552756 is a wasteful number, since it uses less digits than its factorization.

680552756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13087570 (or 13087568 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The square root of 680552756 is about 26087.4060803293. The cubic root of 680552756 is about 879.6041418579.

The spelling of 680552756 in words is "six hundred eighty million, five hundred fifty-two thousand, seven hundred fifty-six".