27666836 has 12 divisors (see below), whose sum is σ = 48486228. Its totient is φ = 13813632.

The previous prime is 27666833. The next prime is 27666853. The reversal of 27666836 is 63866672.

It can be written as a sum of positive squares in 2 ways, for example, as 6451600 + 21215236 = 2540^2 + 4606^2 .

It is a super-3 number, since 3×27666836³ (a number of 23 digits) contains 333 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27666833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1541 + ... + 7596.

It is an arithmetic number, because the mean of its divisors is an integer number (4040519).

Almost surely, 2^27666836 is an apocalyptic number.

It is an amenable number.

27666836 is a deficient number, since it is larger than the sum of its proper divisors (20819392).

27666836 is a wasteful number, since it uses less digits than its factorization.

27666836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9898 (or 9896 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 27666836 is about 5259.9273759245. The cubic root of 27666836 is about 302.4497050002.

The spelling of 27666836 in words is "twenty-seven million, six hundred sixty-six thousand, eight hundred thirty-six".