812956 has 12 divisors (see below), whose sum is σ = 1432368. Its totient is φ = 403712.

The previous prime is 812939. The next prime is 812963. The reversal of 812956 is 659218.

It is a zygodrome in base 2.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 60 + ... + 1276.

It is an arithmetic number, because the mean of its divisors is an integer number (119364).

2⁸¹²⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

812956 is a deficient number, since it is larger than the sum of its proper divisors (619412).

812956 is a wasteful number, since it uses less digits than its factorization.

812956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1386 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 812956 is about 901.6407266755. The cubic root of 812956 is about 93.3302323233.

The spelling of 812956 in words is "eight hundred twelve thousand, nine hundred fifty-six".