264889 has 2 divisors, whose sum is σ = 264890. Its totient is φ = 264888.

The previous prime is 264881. The next prime is 264893. The reversal of 264889 is 988462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193600 + 71289 = 440^2 + 267^2 .

It is a cyclic number.

It is not a de Polignac number, because 264889 - 2³ = 264881 is a prime.

It is a nialpdrome in base 9.

It is not a weakly prime, because it can be changed into another prime (264881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132444 + 132445.

It is an arithmetic number, because the mean of its divisors is an integer number (132445).

2²⁶⁴⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

264889 is a deficient number, since it is larger than the sum of its proper divisors (1).

264889 is an equidigital number, since it uses as much as digits as its factorization.

264889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 264889 is about 514.6736830264. The cubic root of 264889 is about 64.2226134499. Note that the first 3 decimals are identical.

The spelling of 264889 in words is "two hundred sixty-four thousand, eight hundred eighty-nine".