264040623 has 24 divisors (see below), whose sum is σ = 475502976. Its totient is φ = 137163600.

The previous prime is 264040591. The next prime is 264040631. The reversal of 264040623 is 326040462.

It is not a de Polignac number, because 264040623 - 2⁵ = 264040591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264040633) 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 23 ways as a sum of consecutive naturals, for example, 189813 + ... + 191198.

It is an arithmetic number, because the mean of its divisors is an integer number (19812624).

Almost surely, 2^264040623 is an apocalyptic number.

264040623 is a deficient number, since it is larger than the sum of its proper divisors (211462353).

264040623 is a wasteful number, since it uses less digits than its factorization.

264040623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381035 (or 381032 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 264040623 is about 16249.3268475959. The cubic root of 264040623 is about 641.5397682679.

The spelling of 264040623 in words is "two hundred sixty-four million, forty thousand, six hundred twenty-three".