27668351 has 4 divisors (see below), whose sum is σ = 29124600. Its totient is φ = 26212104.

The previous prime is 27668323. The next prime is 27668353. The reversal of 27668351 is 15386672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27668351 - 2²² = 23474047 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 (27668353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728096 + ... + 728133.

It is an arithmetic number, because the mean of its divisors is an integer number (7281150).

Almost surely, 2^27668351 is an apocalyptic number.

27668351 is a deficient number, since it is larger than the sum of its proper divisors (1456249).

27668351 is a wasteful number, since it uses less digits than its factorization.

27668351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456248.

The product of its digits is 60480, while the sum is 38.

The square root of 27668351 is about 5260.0713873483. The cubic root of 27668351 is about 302.4552254838.

The spelling of 27668351 in words is "twenty-seven million, six hundred sixty-eight thousand, three hundred fifty-one".