27661103 has 8 divisors (see below), whose sum is σ = 28162080. Its totient is φ = 27163360.

The previous prime is 27661069. The next prime is 27661129. The reversal of 27661103 is 30116672.

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 27661103 - 2¹⁶ = 27595567 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 (27661133) 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, 21893 + ... + 23121.

It is an arithmetic number, because the mean of its divisors is an integer number (3520260).

Almost surely, 2^27661103 is an apocalyptic number.

27661103 is a deficient number, since it is larger than the sum of its proper divisors (500977).

27661103 is a wasteful number, since it uses less digits than its factorization.

27661103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 27661103 is about 5259.3823781885. The cubic root of 27661103 is about 302.4288127915.

Adding to 27661103 its reverse (30116672), we get a palindrome (57777775).

The spelling of 27661103 in words is "twenty-seven million, six hundred sixty-one thousand, one hundred three".