27997695 has 48 divisors (see below), whose sum is σ = 53419392. Its totient is φ = 13452480.

The previous prime is 27997663. The next prime is 27997699. The reversal of 27997695 is 59679972.

It is not a de Polignac number, because 27997695 - 2⁵ = 27997663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27997699) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80512 + ... + 80858.

It is an arithmetic number, because the mean of its divisors is an integer number (1112904).

Almost surely, 2^27997695 is an apocalyptic number.

27997695 is a deficient number, since it is larger than the sum of its proper divisors (25421697).

27997695 is a wasteful number, since it uses less digits than its factorization.

27997695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 529 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 27997695 is about 5291.2848156190. The cubic root of 27997695 is about 303.6505644142.

The spelling of 27997695 in words is "twenty-seven million, nine hundred ninety-seven thousand, six hundred ninety-five".