812673 has 20 divisors (see below), whose sum is σ = 1239040. Its totient is φ = 530712.

The previous prime is 812671. The next prime is 812681. The reversal of 812673 is 376218.

It is not a de Polignac number, because 812673 - 2¹ = 812671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Duffinian number.

812673 is a modest number, since divided by 2673 gives 81 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812671) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6336 + ... + 6462.

It is an arithmetic number, because the mean of its divisors is an integer number (61952).

2⁸¹²⁶⁷³ is an apocalyptic number.

It is an amenable number.

812673 is a deficient number, since it is larger than the sum of its proper divisors (426367).

812673 is a wasteful number, since it uses less digits than its factorization.

812673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 209 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 812673 is about 901.4837768923. The cubic root of 812673 is about 93.3194012651.

It can be divided in two parts, 812 and 673, that added together give a triangular number (1485 = T₅₄).

The spelling of 812673 in words is "eight hundred twelve thousand, six hundred seventy-three".