27648765 has 12 divisors (see below), whose sum is σ = 47924604. Its totient is φ = 14745984.

The previous prime is 27648763. The next prime is 27648767. The reversal of 27648765 is 56784672.

It is an interprime number because it is at equal distance from previous prime (27648763) and next prime (27648767).

It can be written as a sum of positive squares in 2 ways, for example, as 11148921 + 16499844 = 3339^2 + 4062^2 .

It is not a de Polignac number, because 27648765 - 2¹ = 27648763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 614417 = 27648765 / (2 + 7 + 6 + 4 + 8 + 7 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27648765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27648763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307164 + ... + 307253.

It is an arithmetic number, because the mean of its divisors is an integer number (3993717).

Almost surely, 2^27648765 is an apocalyptic number.

It is an amenable number.

27648765 is a deficient number, since it is larger than the sum of its proper divisors (20275839).

27648765 is a wasteful number, since it uses less digits than its factorization.

27648765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614428 (or 614425 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 27648765 is about 5258.2092959486. The cubic root of 27648765 is about 302.3838408368.

The spelling of 27648765 in words is "twenty-seven million, six hundred forty-eight thousand, seven hundred sixty-five".