27648979 has 2 divisors, whose sum is σ = 27648980. Its totient is φ = 27648978.

The previous prime is 27648961. The next prime is 27648997. The reversal of 27648979 is 97984672.

Together with next prime (27648997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (27648961) and next prime (27648997).

It is a cyclic number.

It is not a de Polignac number, because 27648979 - 2⁵ = 27648947 is a prime.

It is not a weakly prime, because it can be changed into another prime (27648779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13824489 + 13824490.

It is an arithmetic number, because the mean of its divisors is an integer number (13824490).

Almost surely, 2^27648979 is an apocalyptic number.

27648979 is a deficient number, since it is larger than the sum of its proper divisors (1).

27648979 is an equidigital number, since it uses as much as digits as its factorization.

27648979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The square root of 27648979 is about 5258.2296450421. The cubic root of 27648979 is about 302.3846209798.

The spelling of 27648979 in words is "twenty-seven million, six hundred forty-eight thousand, nine hundred seventy-nine".