712812 has 24 divisors (see below), whose sum is σ = 1677312. Its totient is φ = 235600.

The previous prime is 712807. The next prime is 712819. The reversal of 712812 is 218217.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 712812.

It is not an unprimeable number, because it can be changed into a prime (712819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137 + ... + 2447.

It is an arithmetic number, because the mean of its divisors is an integer number (69888).

2⁷¹²⁸¹² is an apocalyptic number.

It is an amenable number.

712812 is an abundant number, since it is smaller than the sum of its proper divisors (964500).

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

712812 is a wasteful number, since it uses less digits than its factorization.

712812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its digits is 224, while the sum is 21.

The square root of 712812 is about 844.2819434289. The cubic root of 712812 is about 89.3288344557.

It can be divided in two parts, 7128 and 12, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 712812 in words is "seven hundred twelve thousand, eight hundred twelve".