665267 has 2 divisors, whose sum is σ = 665268. Its totient is φ = 665266.

The previous prime is 665251. The next prime is 665279. The reversal of 665267 is 762566.

665267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665267 - 2⁴ = 665251 is a prime.

It is not a weakly prime, because it can be changed into another prime (665207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332633 + 332634.

It is an arithmetic number, because the mean of its divisors is an integer number (332634).

2⁶⁶⁵²⁶⁷ is an apocalyptic number.

665267 is a deficient number, since it is larger than the sum of its proper divisors (1).

665267 is an equidigital number, since it uses as much as digits as its factorization.

665267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 665267 is about 815.6390132896. The cubic root of 665267 is about 87.2968675657.

The spelling of 665267 in words is "six hundred sixty-five thousand, two hundred sixty-seven".