264466721 has 4 divisors (see below), whose sum is σ = 264573744. Its totient is φ = 264359700.

The previous prime is 264466703. The next prime is 264466723. The reversal of 264466721 is 127664462.

264466721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264466721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264466723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49715 + ... + 54776.

It is an arithmetic number, because the mean of its divisors is an integer number (66143436).

Almost surely, 2^264466721 is an apocalyptic number.

It is an amenable number.

264466721 is a deficient number, since it is larger than the sum of its proper divisors (107023).

264466721 is a wasteful number, since it uses less digits than its factorization.

264466721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107022.

The product of its digits is 96768, while the sum is 38.

The square root of 264466721 is about 16262.4328130818. The cubic root of 264466721 is about 641.8846797133.

The spelling of 264466721 in words is "two hundred sixty-four million, four hundred sixty-six thousand, seven hundred twenty-one".