264520787 has 2 divisors, whose sum is σ = 264520788. Its totient is φ = 264520786.

The previous prime is 264520771. The next prime is 264520811. The reversal of 264520787 is 787025462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264520787 - 2⁴ = 264520771 is a prime.

It is not a weakly prime, because it can be changed into another prime (264520387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132260393 + 132260394.

It is an arithmetic number, because the mean of its divisors is an integer number (132260394).

Almost surely, 2^264520787 is an apocalyptic number.

264520787 is a deficient number, since it is larger than the sum of its proper divisors (1).

264520787 is an equidigital number, since it uses as much as digits as its factorization.

264520787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 264520787 is about 16264.0950255463. The cubic root of 264520787 is about 641.9284177589.

It can be divided in two parts, 2645 and 20787, that added together give a palindrome (23432).

The spelling of 264520787 in words is "two hundred sixty-four million, five hundred twenty thousand, seven hundred eighty-seven".