264266491 has 4 divisors (see below), whose sum is σ = 264317032. Its totient is φ = 264215952.

The previous prime is 264266489. The next prime is 264266501. The reversal of 264266491 is 194662462.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 264266491 - 2¹ = 264266489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264266461) 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, 16386 + ... + 28231.

It is an arithmetic number, because the mean of its divisors is an integer number (66079258).

Almost surely, 2^264266491 is an apocalyptic number.

264266491 is a deficient number, since it is larger than the sum of its proper divisors (50541).

264266491 is an equidigital number, since it uses as much as digits as its factorization.

264266491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50540.

The product of its digits is 124416, while the sum is 40.

The square root of 264266491 is about 16256.2754344284. The cubic root of 264266491 is about 641.7226467006.

The spelling of 264266491 in words is "two hundred sixty-four million, two hundred sixty-six thousand, four hundred ninety-one".