27895664 has 20 divisors (see below), whose sum is σ = 54464520. Its totient is φ = 13840320.

The previous prime is 27895661. The next prime is 27895697. The reversal of 27895664 is 46659872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27895661) 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 in 3 ways as a sum of consecutive naturals, for example, 4559 + ... + 8750.

It is an arithmetic number, because the mean of its divisors is an integer number (2723226).

Almost surely, 2^27895664 is an apocalyptic number.

It is an amenable number.

27895664 is a deficient number, since it is larger than the sum of its proper divisors (26568856).

27895664 is a wasteful number, since it uses less digits than its factorization.

27895664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13448 (or 13442 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 27895664 is about 5281.6345954638. The cubic root of 27895664 is about 303.2812544600.

The spelling of 27895664 in words is "twenty-seven million, eight hundred ninety-five thousand, six hundred sixty-four".