287967 has 4 divisors (see below), whose sum is σ = 383960. Its totient is φ = 191976.

The previous prime is 287939. The next prime is 287977. The reversal of 287967 is 769782.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-287967 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287967.

It is not an unprimeable number, because it can be changed into a prime (287977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47992 + ... + 47997.

It is an arithmetic number, because the mean of its divisors is an integer number (95990).

2²⁸⁷⁹⁶⁷ is an apocalyptic number.

287967 is a deficient number, since it is larger than the sum of its proper divisors (95993).

287967 is an equidigital number, since it uses as much as digits as its factorization.

287967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95992.

The product of its digits is 42336, while the sum is 39.

The square root of 287967 is about 536.6255677845. The cubic root of 287967 is about 66.0360225760.

The spelling of 287967 in words is "two hundred eighty-seven thousand, nine hundred sixty-seven".