27614981 has 2 divisors, whose sum is σ = 27614982. Its totient is φ = 27614980.

The previous prime is 27614969. The next prime is 27615001. The reversal of 27614981 is 18941672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14182756 + 13432225 = 3766^2 + 3665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27614981 is a prime.

It is a super-2 number, since 2×27614981² = 1525174351260722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27614911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13807490 + 13807491.

It is an arithmetic number, because the mean of its divisors is an integer number (13807491).

Almost surely, 2^27614981 is an apocalyptic number.

It is an amenable number.

27614981 is a deficient number, since it is larger than the sum of its proper divisors (1).

27614981 is an equidigital number, since it uses as much as digits as its factorization.

27614981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 27614981 is about 5254.9958135093. The cubic root of 27614981 is about 302.2606297956.

The spelling of 27614981 in words is "twenty-seven million, six hundred fourteen thousand, nine hundred eighty-one".