27666071 has 8 divisors (see below), whose sum is σ = 29800320. Its totient is φ = 25599672.

The previous prime is 27666017. The next prime is 27666097. The reversal of 27666071 is 17066672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27666071 - 2⁶ = 27666007 is a prime.

It is a super-2 number, since 2×27666071² = 1530822969154082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27666011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16115 + ... + 17748.

It is an arithmetic number, because the mean of its divisors is an integer number (3725040).

Almost surely, 2^27666071 is an apocalyptic number.

27666071 is a deficient number, since it is larger than the sum of its proper divisors (2134249).

27666071 is a wasteful number, since it uses less digits than its factorization.

27666071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33925.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 27666071 is about 5259.8546557866. The cubic root of 27666071 is about 302.4469173527.

The spelling of 27666071 in words is "twenty-seven million, six hundred sixty-six thousand, seventy-one".