855986680 has 32 divisors (see below), whose sum is σ = 1927087200. Its totient is φ = 342196096.

The previous prime is 855986647. The next prime is 855986687. The reversal of 855986680 is 86689558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855986687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77589 + ... + 87931.

It is an arithmetic number, because the mean of its divisors is an integer number (60221475).

Almost surely, 2^855986680 is an apocalyptic number.

It is an amenable number.

855986680 is an abundant number, since it is smaller than the sum of its proper divisors (1071100520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855986680 is a wasteful number, since it uses less digits than its factorization.

855986680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12423 (or 12419 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 55.

The square root of 855986680 is about 29257.2500416563. The cubic root of 855986680 is about 949.4869547446.

The spelling of 855986680 in words is "eight hundred fifty-five million, nine hundred eighty-six thousand, six hundred eighty".