264632653 has 4 divisors (see below), whose sum is σ = 265034880. Its totient is φ = 264230428.

The previous prime is 264632639. The next prime is 264632681. The reversal of 264632653 is 356236462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 264632653 - 2⁹ = 264632141 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 (264612653) 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, 200125 + ... + 201442.

It is an arithmetic number, because the mean of its divisors is an integer number (66258720).

Almost surely, 2^264632653 is an apocalyptic number.

It is an amenable number.

264632653 is a deficient number, since it is larger than the sum of its proper divisors (402227).

264632653 is an equidigital number, since it uses as much as digits as its factorization.

264632653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402226.

The product of its digits is 155520, while the sum is 37.

The square root of 264632653 is about 16267.5337098160. The cubic root of 264632653 is about 642.0188956437.

The spelling of 264632653 in words is "two hundred sixty-four million, six hundred thirty-two thousand, six hundred fifty-three".