872647 has 2 divisors, whose sum is σ = 872648. Its totient is φ = 872646.

The previous prime is 872623. The next prime is 872657. The reversal of 872647 is 746278.

872647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

872647 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 872647 - 2¹⁵ = 839879 is a prime.

872647 is a lucky number.

It is equal to p₆₉₂₈₉ and since 872647 and 69289 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436323 + 436324.

It is an arithmetic number, because the mean of its divisors is an integer number (436324).

2⁸⁷²⁶⁴⁷ is an apocalyptic number.

872647 is a deficient number, since it is larger than the sum of its proper divisors (1).

872647 is an equidigital number, since it uses as much as digits as its factorization.

872647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 34.

The square root of 872647 is about 934.1557685954. The cubic root of 872647 is about 95.5607464179.

The spelling of 872647 in words is "eight hundred seventy-two thousand, six hundred forty-seven".