991874674 has 16 divisors (see below), whose sum is σ = 1701801216. Its totient is φ = 424728000.

The previous prime is 991874669. The next prime is 991874683. The reversal of 991874674 is 476478199.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12682 + ... + 46309.

It is an arithmetic number, because the mean of its divisors is an integer number (106362576).

Almost surely, 2^991874674 is an apocalyptic number.

991874674 is a deficient number, since it is larger than the sum of its proper divisors (709926542).

991874674 is a wasteful number, since it uses less digits than its factorization.

991874674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60201.

The product of its digits is 3048192, while the sum is 55.

The square root of 991874674 is about 31494.0418809654. The cubic root of 991874674 is about 997.2841890478.

The spelling of 991874674 in words is "nine hundred ninety-one million, eight hundred seventy-four thousand, six hundred seventy-four".