867243 has 16 divisors (see below), whose sum is σ = 1281056. Its totient is φ = 518400.

The previous prime is 867233. The next prime is 867253. The reversal of 867243 is 342768.

It is an interprime number because it is at equal distance from previous prime (867233) and next prime (867253).

It is not a de Polignac number, because 867243 - 2⁴ = 867227 is a prime.

It is a super-2 number, since 2×867243² = 1504220842098, which contains 22 as substring.

It is a Duffinian number.

867243 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 867243.

It is not an unprimeable number, because it can be changed into a prime (867203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143 + ... + 1743.

It is an arithmetic number, because the mean of its divisors is an integer number (80066).

2⁸⁶⁷²⁴³ is an apocalyptic number.

867243 is a deficient number, since it is larger than the sum of its proper divisors (413813).

867243 is a wasteful number, since it uses less digits than its factorization.

867243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654.

The product of its digits is 8064, while the sum is 30.

The square root of 867243 is about 931.2588254615. The cubic root of 867243 is about 95.3630796487.

It can be divided in two parts, 867 and 243, that multiplied together give a square (210681 = 459²).

The spelling of 867243 in words is "eight hundred sixty-seven thousand, two hundred forty-three".