267997 has 4 divisors (see below), whose sum is σ = 269280. Its totient is φ = 266716.

The previous prime is 267961. The next prime is 268003. The reversal of 267997 is 799762.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-267997 is a prime.

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, 247 + ... + 772.

It is an arithmetic number, because the mean of its divisors is an integer number (67320).

2²⁶⁷⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

267997 is a deficient number, since it is larger than the sum of its proper divisors (1283).

267997 is a wasteful number, since it uses less digits than its factorization.

267997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282.

The product of its digits is 47628, while the sum is 40.

The square root of 267997 is about 517.6842667109. The cubic root of 267997 is about 64.4728167007.

The spelling of 267997 in words is "two hundred sixty-seven thousand, nine hundred ninety-seven".