267643 has 2 divisors, whose sum is σ = 267644. Its totient is φ = 267642.

The previous prime is 267637. The next prime is 267647. The reversal of 267643 is 346762.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 267643 - 2⁵ = 267611 is a prime.

It is not a weakly prime, because it can be changed into another prime (267647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133821 + 133822.

It is an arithmetic number, because the mean of its divisors is an integer number (133822).

2²⁶⁷⁶⁴³ is an apocalyptic number.

267643 is a deficient number, since it is larger than the sum of its proper divisors (1).

267643 is an equidigital number, since it uses as much as digits as its factorization.

267643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 28.

The square root of 267643 is about 517.3422464868. The cubic root of 267643 is about 64.4444165896. Note that the first 4 decimals are identical.

The spelling of 267643 in words is "two hundred sixty-seven thousand, six hundred forty-three".