264644447 has 2 divisors, whose sum is σ = 264644448. Its totient is φ = 264644446.

The previous prime is 264644431. The next prime is 264644473. The reversal of 264644447 is 744446462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264644447 - 2⁴ = 264644431 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264664447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132322223 + 132322224.

It is an arithmetic number, because the mean of its divisors is an integer number (132322224).

Almost surely, 2^264644447 is an apocalyptic number.

264644447 is a deficient number, since it is larger than the sum of its proper divisors (1).

264644447 is an equidigital number, since it uses as much as digits as its factorization.

264644447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 41.

The square root of 264644447 is about 16267.8962069470. The cubic root of 264644447 is about 642.0284332150.

The spelling of 264644447 in words is "two hundred sixty-four million, six hundred forty-four thousand, four hundred forty-seven".