27776005 has 16 divisors (see below), whose sum is σ = 35539200. Its totient is φ = 20779200.

The previous prime is 27775999. The next prime is 27776009. The reversal of 27776005 is 50067772.

It is not a de Polignac number, because 27776005 - 2¹¹ = 27773957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27776009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5655 + ... + 9355.

It is an arithmetic number, because the mean of its divisors is an integer number (2221200).

Almost surely, 2^27776005 is an apocalyptic number.

It is an amenable number.

27776005 is a deficient number, since it is larger than the sum of its proper divisors (7763195).

27776005 is a wasteful number, since it uses less digits than its factorization.

27776005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 27776005 is about 5270.2945837970. The cubic root of 27776005 is about 302.8469892996.

The spelling of 27776005 in words is "twenty-seven million, seven hundred seventy-six thousand, five".