264116591 has 2 divisors, whose sum is σ = 264116592. Its totient is φ = 264116590.

The previous prime is 264116563. The next prime is 264116609. The reversal of 264116591 is 195611462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264116591 - 2⁶ = 264116527 is a prime.

It is a super-2 number, since 2×264116591² = 139515147282922562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264116551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132058295 + 132058296.

It is an arithmetic number, because the mean of its divisors is an integer number (132058296).

Almost surely, 2^264116591 is an apocalyptic number.

264116591 is a deficient number, since it is larger than the sum of its proper divisors (1).

264116591 is an equidigital number, since it uses as much as digits as its factorization.

264116591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 264116591 is about 16251.6642532388. The cubic root of 264116591 is about 641.6012888770.

The spelling of 264116591 in words is "two hundred sixty-four million, one hundred sixteen thousand, five hundred ninety-one".