27982613 has 2 divisors, whose sum is σ = 27982614. Its totient is φ = 27982612.

The previous prime is 27982583. The next prime is 27982621. The reversal of 27982613 is 31628972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27804529 + 178084 = 5273^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 27982613 - 2²² = 23788309 is a prime.

It is a super-3 number, since 3×27982613³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27982673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13991306 + 13991307.

It is an arithmetic number, because the mean of its divisors is an integer number (13991307).

Almost surely, 2^27982613 is an apocalyptic number.

It is an amenable number.

27982613 is a deficient number, since it is larger than the sum of its proper divisors (1).

27982613 is an equidigital number, since it uses as much as digits as its factorization.

27982613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 27982613 is about 5289.8594499287. The cubic root of 27982613 is about 303.5960303964.

The spelling of 27982613 in words is "twenty-seven million, nine hundred eighty-two thousand, six hundred thirteen".