263867 has 2 divisors, whose sum is σ = 263868. Its totient is φ = 263866.

The previous prime is 263863. The next prime is 263869. The reversal of 263867 is 768362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263867 - 2² = 263863 is a prime.

Together with 263869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (263863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131933 + 131934.

It is an arithmetic number, because the mean of its divisors is an integer number (131934).

2²⁶³⁸⁶⁷ is an apocalyptic number.

263867 is a deficient number, since it is larger than the sum of its proper divisors (1).

263867 is an equidigital number, since it uses as much as digits as its factorization.

263867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 263867 is about 513.6798613923. The cubic root of 263867 is about 64.1399120109.

The spelling of 263867 in words is "two hundred sixty-three thousand, eight hundred sixty-seven".