264947687 has 2 divisors, whose sum is σ = 264947688. Its totient is φ = 264947686.

The previous prime is 264947677. The next prime is 264947693. The reversal of 264947687 is 786749462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264947687 - 2¹⁸ = 264685543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264947677) 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, 132473843 + 132473844.

It is an arithmetic number, because the mean of its divisors is an integer number (132473844).

Almost surely, 2^264947687 is an apocalyptic number.

264947687 is a deficient number, since it is larger than the sum of its proper divisors (1).

264947687 is an equidigital number, since it uses as much as digits as its factorization.

264947687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 53.

The square root of 264947687 is about 16277.2137357719. The cubic root of 264947687 is about 642.2735600773.

The spelling of 264947687 in words is "two hundred sixty-four million, nine hundred forty-seven thousand, six hundred eighty-seven".