856872961674 has 48 divisors (see below), whose sum is σ = 1776260373888. Its totient is φ = 275560475904.

The previous prime is 856872961669. The next prime is 856872961699. The reversal of 856872961674 is 476169278658.

It is a junction number, because it is equal to n+sod(n) for n = 856872961599 and 856872961608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6479199 + ... + 6610125.

It is an arithmetic number, because the mean of its divisors is an integer number (37005424456).

Almost surely, 2^856872961674 is an apocalyptic number.

856872961674 is an abundant number, since it is smaller than the sum of its proper divisors (919387412214).

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

856872961674 is a wasteful number, since it uses less digits than its factorization.

856872961674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132287 (or 132258 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 69.

The spelling of 856872961674 in words is "eight hundred fifty-six billion, eight hundred seventy-two million, nine hundred sixty-one thousand, six hundred seventy-four".