264040591 has 2 divisors, whose sum is σ = 264040592. Its totient is φ = 264040590.

The previous prime is 264040589. The next prime is 264040631. The reversal of 264040591 is 195040462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264040591 - 2¹ = 264040589 is a prime.

Together with 264040589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264040531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132020295 + 132020296.

It is an arithmetic number, because the mean of its divisors is an integer number (132020296).

Almost surely, 2^264040591 is an apocalyptic number.

264040591 is a deficient number, since it is larger than the sum of its proper divisors (1).

264040591 is an equidigital number, since it uses as much as digits as its factorization.

264040591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 264040591 is about 16249.3258629397. The cubic root of 264040591 is about 641.5397423511.

The spelling of 264040591 in words is "two hundred sixty-four million, forty thousand, five hundred ninety-one".