264630321 has 10 divisors (see below), whose sum is σ = 395312082. Its totient is φ = 176420160.

The previous prime is 264630287. The next prime is 264630343. The reversal of 264630321 is 123036462.

264630321 is a `hidden beast` number, since 2 + 6 + 4 + 630 + 3 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 232989696 + 31640625 = 15264^2 + 5625^2 .

It is not a de Polignac number, because 264630321 - 2⁷ = 264630193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (264631321) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1633440 + ... + 1633601.

Almost surely, 2^264630321 is an apocalyptic number.

It is an amenable number.

264630321 is a deficient number, since it is larger than the sum of its proper divisors (130681761).

264630321 is an equidigital number, since it uses as much as digits as its factorization.

264630321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267053 (or 3267044 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 264630321 is about 16267.4620331507. The cubic root of 264630321 is about 642.0170097686.

Adding to 264630321 its reverse (123036462), we get a palindrome (387666783).

The spelling of 264630321 in words is "two hundred sixty-four million, six hundred thirty thousand, three hundred twenty-one".