27786897 has 12 divisors (see below), whose sum is σ = 40182480. Its totient is φ = 18503448.

The previous prime is 27786887. The next prime is 27786947. The reversal of 27786897 is 79868772.

It is not a de Polignac number, because 27786897 - 2⁶ = 27786833 is a prime.

It is a super-2 number, since 2×27786897² = 1544223289777218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27786827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13618 + ... + 15524.

It is an arithmetic number, because the mean of its divisors is an integer number (3348540).

Almost surely, 2^27786897 is an apocalyptic number.

It is an amenable number.

27786897 is a deficient number, since it is larger than the sum of its proper divisors (12395583).

27786897 is a wasteful number, since it uses less digits than its factorization.

27786897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532 (or 3529 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 27786897 is about 5271.3278213369. The cubic root of 27786897 is about 302.8865699656.

The spelling of 27786897 in words is "twenty-seven million, seven hundred eighty-six thousand, eight hundred ninety-seven".