27669897 has 32 divisors (see below), whose sum is σ = 45308160. Its totient is φ = 16600320.

The previous prime is 27669893. The next prime is 27669899. The reversal of 27669897 is 79896672.

It is not a de Polignac number, because 27669897 - 2² = 27669893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27669893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9247 + ... + 11867.

It is an arithmetic number, because the mean of its divisors is an integer number (1415880).

Almost surely, 2^27669897 is an apocalyptic number.

27669897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27669897 is a deficient number, since it is larger than the sum of its proper divisors (17638263).

27669897 is a wasteful number, since it uses less digits than its factorization.

27669897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670 (or 2664 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 27669897 is about 5260.2183414760. The cubic root of 27669897 is about 302.4608587200.

The spelling of 27669897 in words is "twenty-seven million, six hundred sixty-nine thousand, eight hundred ninety-seven".