27648865 has 8 divisors (see below), whose sum is σ = 33209280. Its totient is φ = 22098672.

The previous prime is 27648847. The next prime is 27648893. The reversal of 27648865 is 56884672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27648865 - 2¹³ = 27640673 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6022 + ... + 9568.

It is an arithmetic number, because the mean of its divisors is an integer number (4151160).

Almost surely, 2^27648865 is an apocalyptic number.

It is an amenable number.

27648865 is a deficient number, since it is larger than the sum of its proper divisors (5560415).

27648865 is a wasteful number, since it uses less digits than its factorization.

27648865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111.

The product of its digits is 645120, while the sum is 46.

The square root of 27648865 is about 5258.2188048806. The cubic root of 27648865 is about 302.3842053901.

It can be divided in two parts, 276 and 48865, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 27648865 in words is "twenty-seven million, six hundred forty-eight thousand, eight hundred sixty-five".