264215267 has 4 divisors (see below), whose sum is σ = 264281160. Its totient is φ = 264149376.

The previous prime is 264215249. The next prime is 264215269. The reversal of 264215267 is 762512462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 762512462 = 2 ⋅381256231.

It is a cyclic number.

It is not a de Polignac number, because 264215267 - 2¹⁰ = 264214243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264215269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26513 + ... + 35090.

It is an arithmetic number, because the mean of its divisors is an integer number (66070290).

Almost surely, 2^264215267 is an apocalyptic number.

264215267 is a deficient number, since it is larger than the sum of its proper divisors (65893).

264215267 is an equidigital number, since it uses as much as digits as its factorization.

264215267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65892.

The product of its digits is 40320, while the sum is 35.

The square root of 264215267 is about 16254.6998434299. The cubic root of 264215267 is about 641.6811813287.

The spelling of 264215267 in words is "two hundred sixty-four million, two hundred fifteen thousand, two hundred sixty-seven".