264723631 has 4 divisors (see below), whose sum is σ = 267066432. Its totient is φ = 262380832.

The previous prime is 264723617. The next prime is 264723659. The reversal of 264723631 is 136327462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264723631 - 2⁹ = 264723119 is a prime.

It is a super-2 number, since 2×264723631² = 140157201619648322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264723691) 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 3 ways as a sum of consecutive naturals, for example, 1171231 + ... + 1171456.

It is an arithmetic number, because the mean of its divisors is an integer number (66766608).

Almost surely, 2^264723631 is an apocalyptic number.

264723631 is a deficient number, since it is larger than the sum of its proper divisors (2342801).

264723631 is a wasteful number, since it uses less digits than its factorization.

264723631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342800.

The product of its digits is 36288, while the sum is 34.

The square root of 264723631 is about 16270.3297753918. The cubic root of 264723631 is about 642.0924603912.

It can be divided in two parts, 26472 and 3631, that added together give a palindrome (30103).

The spelling of 264723631 in words is "two hundred sixty-four million, seven hundred twenty-three thousand, six hundred thirty-one".