267981 has 12 divisors (see below), whose sum is σ = 415872. Its totient is φ = 153048.

The previous prime is 267961. The next prime is 268003. The reversal of 267981 is 189762.

It is not a de Polignac number, because 267981 - 2⁹ = 267469 is a prime.

It is a super-2 number, since 2×267981² = 143627632722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (267901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 765 + ... + 1058.

It is an arithmetic number, because the mean of its divisors is an integer number (34656).

2²⁶⁷⁹⁸¹ is an apocalyptic number.

267981 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

267981 is a deficient number, since it is larger than the sum of its proper divisors (147891).

267981 is a wasteful number, since it uses less digits than its factorization.

267981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840 (or 1833 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 267981 is about 517.6688130456. The cubic root of 267981 is about 64.4715336196.

The spelling of 267981 in words is "two hundred sixty-seven thousand, nine hundred eighty-one".