27983065 has 24 divisors (see below), whose sum is σ = 38533824. Its totient is φ = 19456800.

The previous prime is 27983047. The next prime is 27983069. The reversal of 27983065 is 56038972.

It is not a de Polignac number, because 27983065 - 2¹³ = 27974873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27983069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12910 + ... + 14920.

It is an arithmetic number, because the mean of its divisors is an integer number (1605576).

Almost surely, 2^27983065 is an apocalyptic number.

It is an amenable number.

27983065 is a deficient number, since it is larger than the sum of its proper divisors (10550759).

27983065 is a wasteful number, since it uses less digits than its factorization.

27983065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 27983065 is about 5289.9021730085. The cubic root of 27983065 is about 303.5976650384.

The spelling of 27983065 in words is "twenty-seven million, nine hundred eighty-three thousand, sixty-five".