27079681 has 2 divisors, whose sum is σ = 27079682. Its totient is φ = 27079680.

The previous prime is 27079673. The next prime is 27079727. The reversal of 27079681 is 18697072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16679056 + 10400625 = 4084^2 + 3225^2 .

It is a cyclic number.

It is not a de Polignac number, because 27079681 - 2³ = 27079673 is a prime.

It is a super-3 number, since 3×27079681³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27079621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13539840 + 13539841.

It is an arithmetic number, because the mean of its divisors is an integer number (13539841).

Almost surely, 2^27079681 is an apocalyptic number.

It is an amenable number.

27079681 is a deficient number, since it is larger than the sum of its proper divisors (1).

27079681 is an equidigital number, since it uses as much as digits as its factorization.

27079681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 27079681 is about 5203.8140819979. The cubic root of 27079681 is about 300.2948249807.

The spelling of 27079681 in words is "twenty-seven million, seventy-nine thousand, six hundred eighty-one".