27620065 has 24 divisors (see below), whose sum is σ = 37001664. Its totient is φ = 19773600.

The previous prime is 27620051. The next prime is 27620081. The reversal of 27620065 is 56002672.

It is not a de Polignac number, because 27620065 - 2¹⁹ = 27095777 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 42634 + ... + 43276.

It is an arithmetic number, because the mean of its divisors is an integer number (1541736).

Almost surely, 2^27620065 is an apocalyptic number.

It is an amenable number.

27620065 is a deficient number, since it is larger than the sum of its proper divisors (9381599).

27620065 is a wasteful number, since it uses less digits than its factorization.

27620065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 27620065 is about 5255.4795214138. The cubic root of 27620065 is about 302.2791776839.

Subtracting from 27620065 its product of nonzero digits (5040), we obtain a square (27615025 = 5255²).

The spelling of 27620065 in words is "twenty-seven million, six hundred twenty thousand, sixty-five".