267987 has 4 divisors (see below), whose sum is σ = 357320. Its totient is φ = 178656.

The previous prime is 267961. The next prime is 268003. The reversal of 267987 is 789762.

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

It is not a de Polignac number, because 267987 - 2¹⁸ = 5843 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (267907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44662 + ... + 44667.

It is an arithmetic number, because the mean of its divisors is an integer number (89330).

2²⁶⁷⁹⁸⁷ is an apocalyptic number.

267987 is a deficient number, since it is larger than the sum of its proper divisors (89333).

267987 is an equidigital number, since it uses as much as digits as its factorization.

267987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89332.

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

The square root of 267987 is about 517.6746082241. The cubic root of 267987 is about 64.4720147810.

The spelling of 267987 in words is "two hundred sixty-seven thousand, nine hundred eighty-seven".