27685946 has 4 divisors (see below), whose sum is σ = 41528922. Its totient is φ = 13842972.

The previous prime is 27685939. The next prime is 27685949. The reversal of 27685946 is 64958672.

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

It can be written as a sum of positive squares in only one way, i.e., 16200625 + 11485321 = 4025^2 + 3389^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27685946.

It is not an unprimeable number, because it can be changed into a prime (27685949) 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 as a sum of consecutive naturals, namely, 6921485 + ... + 6921488.

Almost surely, 2^27685946 is an apocalyptic number.

27685946 is a deficient number, since it is larger than the sum of its proper divisors (13842976).

27685946 is a wasteful number, since it uses less digits than its factorization.

27685946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13842975.

The product of its digits is 725760, while the sum is 47.

The square root of 27685946 is about 5261.7436273540. The cubic root of 27685946 is about 302.5193248588.

The spelling of 27685946 in words is "twenty-seven million, six hundred eighty-five thousand, nine hundred forty-six".