27660791 has 2 divisors, whose sum is σ = 27660792. Its totient is φ = 27660790.

The previous prime is 27660767. The next prime is 27660833. The reversal of 27660791 is 19706672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27660791 - 2¹⁰ = 27659767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27660701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13830395 + 13830396.

It is an arithmetic number, because the mean of its divisors is an integer number (13830396).

Almost surely, 2^27660791 is an apocalyptic number.

27660791 is a deficient number, since it is larger than the sum of its proper divisors (1).

27660791 is an equidigital number, since it uses as much as digits as its factorization.

27660791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 27660791 is about 5259.3527168274. The cubic root of 27660791 is about 302.4276757177.

The spelling of 27660791 in words is "twenty-seven million, six hundred sixty thousand, seven hundred ninety-one".