264623 has 4 divisors (see below), whose sum is σ = 265680. Its totient is φ = 263568.

The previous prime is 264619. The next prime is 264631. The reversal of 264623 is 326462.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 264623 - 2² = 264619 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 6³ + 4⁹ + 2¹¹ + 3⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264643) 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, 86 + ... + 732.

It is an arithmetic number, because the mean of its divisors is an integer number (66420).

2²⁶⁴⁶²³ is an apocalyptic number.

264623 is a deficient number, since it is larger than the sum of its proper divisors (1057).

264623 is an equidigital number, since it uses as much as digits as its factorization.

264623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its digits is 1728, while the sum is 23.

The square root of 264623 is about 514.4152019527. The cubic root of 264623 is about 64.2011089245.

The spelling of 264623 in words is "two hundred sixty-four thousand, six hundred twenty-three".