264680287 has 2 divisors, whose sum is σ = 264680288. Its totient is φ = 264680286.

The previous prime is 264680267. The next prime is 264680291. The reversal of 264680287 is 782086462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264680287 - 2¹⁵ = 264647519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264680237) 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, 132340143 + 132340144.

It is an arithmetic number, because the mean of its divisors is an integer number (132340144).

Almost surely, 2^264680287 is an apocalyptic number.

264680287 is a deficient number, since it is larger than the sum of its proper divisors (1).

264680287 is an equidigital number, since it uses as much as digits as its factorization.

264680287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 264680287 is about 16268.9977257359. The cubic root of 264680287 is about 642.0574145655.

The spelling of 264680287 in words is "two hundred sixty-four million, six hundred eighty thousand, two hundred eighty-seven".