27956666 has 8 divisors (see below), whose sum is σ = 42622644. Its totient is φ = 13749120.

The previous prime is 27956659. The next prime is 27956683. The reversal of 27956666 is 66665972.

It can be written as a sum of positive squares in 2 ways, for example, as 22363441 + 5593225 = 4729^2 + 2365^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 27956666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114455 + ... + 114698.

Almost surely, 2^27956666 is an apocalyptic number.

27956666 is a deficient number, since it is larger than the sum of its proper divisors (14665978).

27956666 is a wasteful number, since it uses less digits than its factorization.

27956666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229216.

The product of its digits is 816480, while the sum is 47.

The square root of 27956666 is about 5287.4063585089. The cubic root of 27956666 is about 303.5021644632.

The spelling of 27956666 in words is "twenty-seven million, nine hundred fifty-six thousand, six hundred sixty-six".