813774 has 16 divisors (see below), whose sum is σ = 1752912. Its totient is φ = 250368.

The previous prime is 813767. The next prime is 813797. The reversal of 813774 is 477318.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 813774.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5139 + ... + 5294.

It is an arithmetic number, because the mean of its divisors is an integer number (109557).

2⁸¹³⁷⁷⁴ is an apocalyptic number.

813774 is an abundant number, since it is smaller than the sum of its proper divisors (939138).

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

813774 is a wasteful number, since it uses less digits than its factorization.

813774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451.

The product of its digits is 4704, while the sum is 30.

The square root of 813774 is about 902.0942301112. The cubic root of 813774 is about 93.3615249305.

The spelling of 813774 in words is "eight hundred thirteen thousand, seven hundred seventy-four".