27633397 has 4 divisors (see below), whose sum is σ = 30145536. Its totient is φ = 25121260.

The previous prime is 27633371. The next prime is 27633401. The reversal of 27633397 is 79333672.

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 27633397 - 2¹⁹ = 27109109 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 (27633337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256053 + ... + 1256074.

It is an arithmetic number, because the mean of its divisors is an integer number (7536384).

Almost surely, 2^27633397 is an apocalyptic number.

It is an amenable number.

27633397 is a deficient number, since it is larger than the sum of its proper divisors (2512139).

27633397 is a wasteful number, since it uses less digits than its factorization.

27633397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512138.

The product of its digits is 142884, while the sum is 40.

The square root of 27633397 is about 5256.7477588334. The cubic root of 27633397 is about 302.3278058310.

The spelling of 27633397 in words is "twenty-seven million, six hundred thirty-three thousand, three hundred ninety-seven".