264448813 has 8 divisors (see below), whose sum is σ = 265800600. Its totient is φ = 263101248.

The previous prime is 264448781. The next prime is 264448843. The reversal of 264448813 is 318844462.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47858724 + 216590089 = 6918^2 + 14717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264448813 - 2⁵ = 264448781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264448843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237903 + ... + 239011.

It is an arithmetic number, because the mean of its divisors is an integer number (33225075).

Almost surely, 2^264448813 is an apocalyptic number.

It is an amenable number.

264448813 is a deficient number, since it is larger than the sum of its proper divisors (1351787).

264448813 is a wasteful number, since it uses less digits than its factorization.

264448813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its digits is 147456, while the sum is 40.

The square root of 264448813 is about 16261.8822096337. The cubic root of 264448813 is about 641.8701912738.

The spelling of 264448813 in words is "two hundred sixty-four million, four hundred forty-eight thousand, eight hundred thirteen".