27706069 has 4 divisors (see below), whose sum is σ = 27774220. Its totient is φ = 27637920.

The previous prime is 27706043. The next prime is 27706079. The reversal of 27706069 is 96060772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21762225 + 5943844 = 4665^2 + 2438^2 .

It is a cyclic number.

It is not a de Polignac number, because 27706069 - 2⁷ = 27705941 is a prime.

It is a super-2 number, since 2×27706069² = 1535252518865522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27706079) 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 3 ways as a sum of consecutive naturals, for example, 33462 + ... + 34279.

It is an arithmetic number, because the mean of its divisors is an integer number (6943555).

Almost surely, 2^27706069 is an apocalyptic number.

It is an amenable number.

27706069 is a deficient number, since it is larger than the sum of its proper divisors (68151).

27706069 is an equidigital number, since it uses as much as digits as its factorization.

27706069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68150.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 27706069 is about 5263.6554788474. The cubic root of 27706069 is about 302.5926005692.

The spelling of 27706069 in words is "twenty-seven million, seven hundred six thousand, sixty-nine".