872317 has 2 divisors, whose sum is σ = 872318. Its totient is φ = 872316.

The previous prime is 872281. The next prime is 872323. The reversal of 872317 is 713278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 811801 + 60516 = 901^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 872317 - 2⁷ = 872189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436158 + 436159.

It is an arithmetic number, because the mean of its divisors is an integer number (436159).

2⁸⁷²³¹⁷ is an apocalyptic number.

It is an amenable number.

872317 is a deficient number, since it is larger than the sum of its proper divisors (1).

872317 is an equidigital number, since it uses as much as digits as its factorization.

872317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 28.

The square root of 872317 is about 933.9791218223. The cubic root of 872317 is about 95.5486991555.

The spelling of 872317 in words is "eight hundred seventy-two thousand, three hundred seventeen".