27766013 has 4 divisors (see below), whose sum is σ = 30290208. Its totient is φ = 25241820.

The previous prime is 27766009. The next prime is 27766027. The reversal of 27766013 is 31066772.

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 27766013 - 2² = 27766009 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 (27766043) 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, 1262081 + ... + 1262102.

It is an arithmetic number, because the mean of its divisors is an integer number (7572552).

Almost surely, 2^27766013 is an apocalyptic number.

It is an amenable number.

27766013 is a deficient number, since it is larger than the sum of its proper divisors (2524195).

27766013 is a wasteful number, since it uses less digits than its factorization.

27766013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524194.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 27766013 is about 5269.3465439274. The cubic root of 27766013 is about 302.8106700611.

The spelling of 27766013 in words is "twenty-seven million, seven hundred sixty-six thousand, thirteen".