27069561 has 12 divisors (see below), whose sum is σ = 39150592. Its totient is φ = 18023256.

The previous prime is 27069529. The next prime is 27069599. The reversal of 27069561 is 16596072.

It is not a de Polignac number, because 27069561 - 2⁵ = 27069529 is a prime.

It is a super-2 number, since 2×27069561² = 1465522265465442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27069521) 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 11 ways as a sum of consecutive naturals, for example, 8400 + ... + 11166.

Almost surely, 2^27069561 is an apocalyptic number.

It is an amenable number.

27069561 is a deficient number, since it is larger than the sum of its proper divisors (12081031).

27069561 is a wasteful number, since it uses less digits than its factorization.

27069561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860 (or 3857 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 27069561 is about 5202.8416274186. The cubic root of 27069561 is about 300.2574123997.

The spelling of 27069561 in words is "twenty-seven million, sixty-nine thousand, five hundred sixty-one".