264995287 has 2 divisors, whose sum is σ = 264995288. Its totient is φ = 264995286.

The previous prime is 264995219. The next prime is 264995323. The reversal of 264995287 is 782599462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264995287 - 2¹⁵ = 264962519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264998287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132497643 + 132497644.

It is an arithmetic number, because the mean of its divisors is an integer number (132497644).

Almost surely, 2^264995287 is an apocalyptic number.

264995287 is a deficient number, since it is larger than the sum of its proper divisors (1).

264995287 is an equidigital number, since it uses as much as digits as its factorization.

264995287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 264995287 is about 16278.6758368118. The cubic root of 264995287 is about 642.3120209915.

The spelling of 264995287 in words is "two hundred sixty-four million, nine hundred ninety-five thousand, two hundred eighty-seven".