27132661 has 16 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 25316928.

The previous prime is 27132649. The next prime is 27132667. The reversal of 27132661 is 16623172.

27132661 is a nontrivial binomial coefficient, being equal to C(7367, 2).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27132661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27132667) 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 15 ways as a sum of consecutive naturals, for example, 195130 + ... + 195268.

It is an arithmetic number, because the mean of its divisors is an integer number (1814400).

Almost surely, 2^27132661 is an apocalyptic number.

27132661 is the 7366-th triangular number.

27132661 is the 2456-th centered nonagonal number.

It is an amenable number.

27132661 is a deficient number, since it is larger than the sum of its proper divisors (1897739).

27132661 is a wasteful number, since it uses less digits than its factorization.

27132661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348.

The product of its digits is 3024, while the sum is 28.

The square root of 27132661 is about 5208.9020916120. The cubic root of 27132661 is about 300.4905345195.

The spelling of 27132661 in words is "twenty-seven million, one hundred thirty-two thousand, six hundred sixty-one".