27432661 has 4 divisors (see below), whose sum is σ = 27489024. Its totient is φ = 27376300.

The previous prime is 27432653. The next prime is 27432673. The reversal of 27432661 is 16623472.

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 27432661 - 2³ = 27432653 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 (27432061) 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, 27445 + ... + 28426.

It is an arithmetic number, because the mean of its divisors is an integer number (6872256).

Almost surely, 2^27432661 is an apocalyptic number.

It is an amenable number.

27432661 is a deficient number, since it is larger than the sum of its proper divisors (56363).

27432661 is an equidigital number, since it uses as much as digits as its factorization.

27432661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56362.

The product of its digits is 12096, while the sum is 31.

The square root of 27432661 is about 5237.6197838331. The cubic root of 27432661 is about 301.5939640772.

The spelling of 27432661 in words is "twenty-seven million, four hundred thirty-two thousand, six hundred sixty-one".