27067221 has 6 divisors (see below), whose sum is σ = 39097110. Its totient is φ = 18044808.

The previous prime is 27067181. The next prime is 27067273. The reversal of 27067221 is 12276072.

It can be written as a sum of positive squares in only one way, i.e., 17388900 + 9678321 = 4170^2 + 3111^2 .

It is not a de Polignac number, because 27067221 - 2⁹ = 27066709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27067321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1503726 + ... + 1503743.

It is an arithmetic number, because the mean of its divisors is an integer number (6516185).

Almost surely, 2^27067221 is an apocalyptic number.

It is an amenable number.

27067221 is a deficient number, since it is larger than the sum of its proper divisors (12029889).

27067221 is a wasteful number, since it uses less digits than its factorization.

27067221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007475 (or 3007472 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 27067221 is about 5202.6167454465. The cubic root of 27067221 is about 300.2487603373.

The spelling of 27067221 in words is "twenty-seven million, sixty-seven thousand, two hundred twenty-one".