812173 has 2 divisors, whose sum is σ = 812174. Its totient is φ = 812172.

The previous prime is 812167. The next prime is 812179. The reversal of 812173 is 371218.

It is a balanced prime because it is at equal distance from previous prime (812167) and next prime (812179).

It can be written as a sum of positive squares in only one way, i.e., 522729 + 289444 = 723^2 + 538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812173 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406086 + 406087.

It is an arithmetic number, because the mean of its divisors is an integer number (406087).

2⁸¹²¹⁷³ is an apocalyptic number.

It is an amenable number.

812173 is a deficient number, since it is larger than the sum of its proper divisors (1).

812173 is an equidigital number, since it uses as much as digits as its factorization.

812173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 22.

The square root of 812173 is about 901.2064136478. The cubic root of 812173 is about 93.3002589725.

The spelling of 812173 in words is "eight hundred twelve thousand, one hundred seventy-three".