27717061 has 2 divisors, whose sum is σ = 27717062. Its totient is φ = 27717060.

The previous prime is 27717059. The next prime is 27717091. The reversal of 27717061 is 16071772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26204161 + 1512900 = 5119^2 + 1230^2 .

It is a cyclic number.

It is not a de Polignac number, because 27717061 - 2¹ = 27717059 is a prime.

Together with 27717059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27717031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13858530 + 13858531.

It is an arithmetic number, because the mean of its divisors is an integer number (13858531).

Almost surely, 2^27717061 is an apocalyptic number.

It is an amenable number.

27717061 is a deficient number, since it is larger than the sum of its proper divisors (1).

27717061 is an equidigital number, since it uses as much as digits as its factorization.

27717061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 27717061 is about 5264.6995165916. The cubic root of 27717061 is about 302.6326117560.

The spelling of 27717061 in words is "twenty-seven million, seven hundred seventeen thousand, sixty-one".