264490885 has 4 divisors (see below), whose sum is σ = 317389068. Its totient is φ = 211592704.

The previous prime is 264490873. The next prime is 264490907. The reversal of 264490885 is 588094462.

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 28376929 + 236113956 = 5327^2 + 15366^2 .

It is a cyclic number.

It is not a de Polignac number, because 264490885 - 2⁷ = 264490757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26449084 + ... + 26449093.

It is an arithmetic number, because the mean of its divisors is an integer number (79347267).

Almost surely, 2^264490885 is an apocalyptic number.

It is an amenable number.

264490885 is a deficient number, since it is larger than the sum of its proper divisors (52898183).

264490885 is an equidigital number, since it uses as much as digits as its factorization.

264490885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52898182.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 264490885 is about 16263.1757353845. The cubic root of 264490885 is about 641.9042285233.

The spelling of 264490885 in words is "two hundred sixty-four million, four hundred ninety thousand, eight hundred eighty-five".