680850855 has 24 divisors (see below), whose sum is σ = 1200148560. Its totient is φ = 356964480.

The previous prime is 680850823. The next prime is 680850913. The reversal of 680850855 is 558058086.

It is not a de Polignac number, because 680850855 - 2⁵ = 680850823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 680850855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125566 + ... + 130875.

It is an arithmetic number, because the mean of its divisors is an integer number (50006190).

Almost surely, 2^680850855 is an apocalyptic number.

680850855 is a deficient number, since it is larger than the sum of its proper divisors (519297705).

680850855 is a wasteful number, since it uses less digits than its factorization.

680850855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256511 (or 256508 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The square root of 680850855 is about 26093.1189205124. The cubic root of 680850855 is about 879.7325525934.

The spelling of 680850855 in words is "six hundred eighty million, eight hundred fifty thousand, eight hundred fifty-five".