27633997 has 4 divisors (see below), whose sum is σ = 27672736. Its totient is φ = 27595260.

The previous prime is 27633953. The next prime is 27634003. The reversal of 27633997 is 79933672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27633997 - 2⁷ = 27633869 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 (27633917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18279 + ... + 19732.

It is an arithmetic number, because the mean of its divisors is an integer number (6918184).

Almost surely, 2^27633997 is an apocalyptic number.

It is an amenable number.

27633997 is a deficient number, since it is larger than the sum of its proper divisors (38739).

27633997 is an equidigital number, since it uses as much as digits as its factorization.

27633997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38738.

The product of its digits is 428652, while the sum is 46.

The square root of 27633997 is about 5256.8048280300. The cubic root of 27633997 is about 302.3299939487.

The spelling of 27633997 in words is "twenty-seven million, six hundred thirty-three thousand, nine hundred ninety-seven".