27655907 has 2 divisors, whose sum is σ = 27655908. Its totient is φ = 27655906.

The previous prime is 27655897. The next prime is 27655919. The reversal of 27655907 is 70955672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27655907 - 2⁴ = 27655891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27655987) 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 as a sum of consecutive naturals, namely, 13827953 + 13827954.

It is an arithmetic number, because the mean of its divisors is an integer number (13827954).

Almost surely, 2^27655907 is an apocalyptic number.

27655907 is a deficient number, since it is larger than the sum of its proper divisors (1).

27655907 is an equidigital number, since it uses as much as digits as its factorization.

27655907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 27655907 is about 5258.8883806371. Note that the first 3 decimals coincide. The cubic root of 27655907 is about 302.4098750251.

The spelling of 27655907 in words is "twenty-seven million, six hundred fifty-five thousand, nine hundred seven".