87564445 has 16 divisors (see below), whose sum is σ = 111032640. Its totient is φ = 66109824.

The previous prime is 87564443. The next prime is 87564457. The reversal of 87564445 is 54446578.

It is a cyclic number.

It is not a de Polignac number, because 87564445 - 2¹ = 87564443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87564443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25257 + ... + 28513.

It is an arithmetic number, because the mean of its divisors is an integer number (6939540).

Almost surely, 2^87564445 is an apocalyptic number.

It is an amenable number.

87564445 is a deficient number, since it is larger than the sum of its proper divisors (23468195).

87564445 is a wasteful number, since it uses less digits than its factorization.

87564445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564.

The product of its digits is 537600, while the sum is 43.

The square root of 87564445 is about 9357.5875630421. The cubic root of 87564445 is about 444.0609664544.

The spelling of 87564445 in words is "eighty-seven million, five hundred sixty-four thousand, four hundred forty-five".