264351321 has 36 divisors (see below), whose sum is σ = 416572416. Its totient is φ = 161460000.

The previous prime is 264351293. The next prime is 264351331. The reversal of 264351321 is 123153462.

264351321 is a `hidden beast` number, since 2 + 643 + 5 + 13 + 2 + 1 = 666.

It is not a de Polignac number, because 264351321 - 2⁵ = 264351289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264351331) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 229096 + ... + 230246.

It is an arithmetic number, because the mean of its divisors is an integer number (11571456).

Almost surely, 2^264351321 is an apocalyptic number.

It is an amenable number.

264351321 is a deficient number, since it is larger than the sum of its proper divisors (152221095).

264351321 is a wasteful number, since it uses less digits than its factorization.

264351321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1318 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 264351321 is about 16258.8843713214. The cubic root of 264351321 is about 641.7913040473.

The spelling of 264351321 in words is "two hundred sixty-four million, three hundred fifty-one thousand, three hundred twenty-one".