264653663 has 12 divisors (see below), whose sum is σ = 282215280. Its totient is φ = 247713312.

The previous prime is 264653639. The next prime is 264653687. The reversal of 264653663 is 366356462.

It is an interprime number because it is at equal distance from previous prime (264653639) and next prime (264653687).

It is not a de Polignac number, because 264653663 - 2⁸ = 264653407 is a prime.

It is a super-2 number, since 2×264653663² = 140083122678635138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264653663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264653063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48203 + ... + 53411.

It is an arithmetic number, because the mean of its divisors is an integer number (23517940).

Almost surely, 2^264653663 is an apocalyptic number.

264653663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

264653663 is a deficient number, since it is larger than the sum of its proper divisors (17561617).

264653663 is an equidigital number, since it uses as much as digits as its factorization.

264653663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326 (or 5279 counting only the distinct ones).

The product of its digits is 466560, while the sum is 41.

The square root of 264653663 is about 16268.1794617591. The cubic root of 264653663 is about 642.0358858122.

The spelling of 264653663 in words is "two hundred sixty-four million, six hundred fifty-three thousand, six hundred sixty-three".