264678269 has 4 divisors (see below), whose sum is σ = 267106620. Its totient is φ = 262249920.

The previous prime is 264678241. The next prime is 264678283. The reversal of 264678269 is 962876462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 191490244 + 73188025 = 13838^2 + 8555^2 .

It is a cyclic number.

It is not a de Polignac number, because 264678269 - 2²⁴ = 247901053 is a prime.

It is a super-2 number, since 2×264678269² = 140109172161672722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264678229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214012 + ... + 1214229.

It is an arithmetic number, because the mean of its divisors is an integer number (66776655).

Almost surely, 2^264678269 is an apocalyptic number.

It is an amenable number.

264678269 is a deficient number, since it is larger than the sum of its proper divisors (2428351).

264678269 is a wasteful number, since it uses less digits than its factorization.

264678269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428350.

The product of its digits is 1741824, while the sum is 50.

The square root of 264678269 is about 16268.9357058168. The cubic root of 264678269 is about 642.0557828167.

The spelling of 264678269 in words is "two hundred sixty-four million, six hundred seventy-eight thousand, two hundred sixty-nine".