27645479 has 2 divisors, whose sum is σ = 27645480. Its totient is φ = 27645478.

The previous prime is 27645469. The next prime is 27645491. The reversal of 27645479 is 97454672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27645479 - 2⁸ = 27645223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27645419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13822739 + 13822740.

It is an arithmetic number, because the mean of its divisors is an integer number (13822740).

Almost surely, 2^27645479 is an apocalyptic number.

27645479 is a deficient number, since it is larger than the sum of its proper divisors (1).

27645479 is an equidigital number, since it uses as much as digits as its factorization.

27645479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 27645479 is about 5257.8968228751. The cubic root of 27645479 is about 302.3718611255.

The spelling of 27645479 in words is "twenty-seven million, six hundred forty-five thousand, four hundred seventy-nine".