27966166 has 4 divisors (see below), whose sum is σ = 41949252. Its totient is φ = 13983082.

The previous prime is 27966163. The next prime is 27966181. The reversal of 27966166 is 66166972.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27966161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6991540 + ... + 6991543.

It is an arithmetic number, because the mean of its divisors is an integer number (10487313).

Almost surely, 2^27966166 is an apocalyptic number.

27966166 is a deficient number, since it is larger than the sum of its proper divisors (13983086).

27966166 is a wasteful number, since it uses less digits than its factorization.

27966166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13983085.

The product of its digits is 163296, while the sum is 43.

The square root of 27966166 is about 5288.3046432671. The cubic root of 27966166 is about 303.5365384242.

The spelling of 27966166 in words is "twenty-seven million, nine hundred sixty-six thousand, one hundred sixty-six".