267640 has 16 divisors (see below), whose sum is σ = 602280. Its totient is φ = 107040.

The previous prime is 267637. The next prime is 267643. The reversal of 267640 is 46762.

It is an interprime number because it is at equal distance from previous prime (267637) and next prime (267643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (267643) 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, 3306 + ... + 3385.

2²⁶⁷⁶⁴⁰ is an apocalyptic number.

267640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

267640 is an abundant number, since it is smaller than the sum of its proper divisors (334640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

267640 is a wasteful number, since it uses less digits than its factorization.

267640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702 (or 6698 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 267640 is about 517.3393470441. The cubic root of 267640 is about 64.4441758037. Note that the first 3 decimals are identical.

The spelling of 267640 in words is "two hundred sixty-seven thousand, six hundred forty".