264381887 has 32 divisors (see below), whose sum is σ = 336752640. Its totient is φ = 201611520.

The previous prime is 264381883. The next prime is 264381889. The reversal of 264381887 is 788183462.

It is not a de Polignac number, because 264381887 - 2² = 264381883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264381883) 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 in 31 ways as a sum of consecutive naturals, for example, 1185458 + ... + 1185680.

It is an arithmetic number, because the mean of its divisors is an integer number (10523520).

Almost surely, 2^264381887 is an apocalyptic number.

264381887 is a deficient number, since it is larger than the sum of its proper divisors (72370753).

264381887 is a wasteful number, since it uses less digits than its factorization.

264381887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its digits is 516096, while the sum is 47.

The square root of 264381887 is about 16259.8243225442. The cubic root of 264381887 is about 641.8160391068.

The spelling of 264381887 in words is "two hundred sixty-four million, three hundred eighty-one thousand, eight hundred eighty-seven".