27563997 has 8 divisors (see below), whose sum is σ = 37255744. Its totient is φ = 18124128.

The previous prime is 27563971. The next prime is 27563999. The reversal of 27563997 is 79936572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27563997 - 2¹¹ = 27561949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27563999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62713 + ... + 63150.

It is an arithmetic number, because the mean of its divisors is an integer number (4656968).

Almost surely, 2^27563997 is an apocalyptic number.

It is an amenable number.

27563997 is a deficient number, since it is larger than the sum of its proper divisors (9691747).

27563997 is a wasteful number, since it uses less digits than its factorization.

27563997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125939.

The product of its digits is 714420, while the sum is 48.

The square root of 27563997 is about 5250.1425694928. The cubic root of 27563997 is about 302.0744995509.

The spelling of 27563997 in words is "twenty-seven million, five hundred sixty-three thousand, nine hundred ninety-seven".