812534 has 4 divisors (see below), whose sum is σ = 1218804. Its totient is φ = 406266.

The previous prime is 812527. The next prime is 812587. The reversal of 812534 is 435218.

It is a semiprime because it is the product of two primes.

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 812534.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203132 + ... + 203135.

It is an arithmetic number, because the mean of its divisors is an integer number (304701).

2⁸¹²⁵³⁴ is an apocalyptic number.

812534 is a deficient number, since it is larger than the sum of its proper divisors (406270).

812534 is a wasteful number, since it uses less digits than its factorization.

812534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406269.

The product of its digits is 960, while the sum is 23.

The square root of 812534 is about 901.4066784754. The cubic root of 812534 is about 93.3140804959.

The spelling of 812534 in words is "eight hundred twelve thousand, five hundred thirty-four".