27661089 has 8 divisors (see below), whose sum is σ = 37878400. Its totient is φ = 17942256.

The previous prime is 27661069. The next prime is 27661129. The reversal of 27661089 is 98016672.

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

It is not a de Polignac number, because 27661089 - 2⁸ = 27660833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27661069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124489 + ... + 124710.

It is an arithmetic number, because the mean of its divisors is an integer number (4734800).

Almost surely, 2^27661089 is an apocalyptic number.

It is an amenable number.

27661089 is a deficient number, since it is larger than the sum of its proper divisors (10217311).

27661089 is a wasteful number, since it uses less digits than its factorization.

27661089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249239.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 27661089 is about 5259.3810472336. The cubic root of 27661089 is about 302.4287617691.

The spelling of 27661089 in words is "twenty-seven million, six hundred sixty-one thousand, eighty-nine".