680662288251 has 24 divisors (see below), whose sum is σ = 1076546006640. Its totient is φ = 410989041600.

The previous prime is 680662288219. The next prime is 680662288283. The reversal of 680662288251 is 152882266086.

It is a happy number.

680662288251 is a `hidden beast` number, since 6 + 8 + 0 + 6 + 622 + 8 + 8 + 2 + 5 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (680662288219) and next prime (680662288283).

It is not a de Polignac number, because 680662288251 - 2⁵ = 680662288219 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (680662280251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12752880 + ... + 12806141.

It is an arithmetic number, because the mean of its divisors is an integer number (44856083610).

Almost surely, 2^680662288251 is an apocalyptic number.

680662288251 is a deficient number, since it is larger than the sum of its proper divisors (395883718389).

680662288251 is a wasteful number, since it uses less digits than its factorization.

680662288251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25559307 (or 25559304 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 680662288251 in words is "six hundred eighty billion, six hundred sixty-two million, two hundred eighty-eight thousand, two hundred fifty-one".