27065421 has 20 divisors (see below), whose sum is σ = 40802652. Its totient is φ = 17877888.

The previous prime is 27065419. The next prime is 27065459. The reversal of 27065421 is 12456072.

27065421 is a `hidden beast` number, since 2 + 7 + 0 + 654 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2205225 + 24860196 = 1485^2 + 4986^2 .

It is not a de Polignac number, because 27065421 - 2¹ = 27065419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27065471) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7675 + ... + 10631.

Almost surely, 2^27065421 is an apocalyptic number.

It is an amenable number.

27065421 is a deficient number, since it is larger than the sum of its proper divisors (13737231).

27065421 is a wasteful number, since it uses less digits than its factorization.

27065421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082 (or 3073 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 27065421 is about 5202.4437526993. The cubic root of 27065421 is about 300.2421045654.

The spelling of 27065421 in words is "twenty-seven million, sixty-five thousand, four hundred twenty-one".