264403631 has 8 divisors (see below), whose sum is σ = 266835360. Its totient is φ = 261983232.

The previous prime is 264403621. The next prime is 264403637. The reversal of 264403631 is 136304462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264403631 is a prime.

It is a super-2 number, since 2×264403631² = 139818560171968322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264403594 and 264403603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264403637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48155 + ... + 53363.

It is an arithmetic number, because the mean of its divisors is an integer number (33354420).

Almost surely, 2^264403631 is an apocalyptic number.

264403631 is a deficient number, since it is larger than the sum of its proper divisors (2431729).

264403631 is a wasteful number, since it uses less digits than its factorization.

264403631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 264403631 is about 16260.4929507072. The cubic root of 264403631 is about 641.8336339397.

The spelling of 264403631 in words is "two hundred sixty-four million, four hundred three thousand, six hundred thirty-one".