264887407 has 4 divisors (see below), whose sum is σ = 267863760. Its totient is φ = 261911056.

The previous prime is 264887401. The next prime is 264887411. The reversal of 264887407 is 704788462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264887407 - 2¹⁹ = 264363119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264887401) 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 in 3 ways as a sum of consecutive naturals, for example, 1488043 + ... + 1488220.

It is an arithmetic number, because the mean of its divisors is an integer number (66965940).

Almost surely, 2^264887407 is an apocalyptic number.

264887407 is a deficient number, since it is larger than the sum of its proper divisors (2976353).

264887407 is an equidigital number, since it uses as much as digits as its factorization.

264887407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976352.

The product of its (nonzero) digits is 602112, while the sum is 46.

The square root of 264887407 is about 16275.3619621807. The cubic root of 264887407 is about 642.2248470814.

The spelling of 264887407 in words is "two hundred sixty-four million, eight hundred eighty-seven thousand, four hundred seven".