27664141 has 4 divisors (see below), whose sum is σ = 28014400. Its totient is φ = 27313884.

The previous prime is 27664139. The next prime is 27664157. The reversal of 27664141 is 14146672.

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 27664141 - 2¹ = 27664139 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 (27664111) 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, 175011 + ... + 175168.

It is an arithmetic number, because the mean of its divisors is an integer number (7003600).

Almost surely, 2^27664141 is an apocalyptic number.

It is an amenable number.

27664141 is a deficient number, since it is larger than the sum of its proper divisors (350259).

27664141 is an equidigital number, since it uses as much as digits as its factorization.

27664141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350258.

The product of its digits is 8064, while the sum is 31.

The square root of 27664141 is about 5259.6711874413. The cubic root of 27664141 is about 302.4398842360.

The spelling of 27664141 in words is "twenty-seven million, six hundred sixty-four thousand, one hundred forty-one".