27012613 has 2 divisors, whose sum is σ = 27012614. Its totient is φ = 27012612.

The previous prime is 27012581. The next prime is 27012617. The reversal of 27012613 is 31621072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16785409 + 10227204 = 4097^2 + 3198^2 .

It is a cyclic number.

It is not a de Polignac number, because 27012613 - 2⁵ = 27012581 is a prime.

It is a super-2 number, since 2×27012613² = 1459362522175538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27012617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13506306 + 13506307.

It is an arithmetic number, because the mean of its divisors is an integer number (13506307).

Almost surely, 2^27012613 is an apocalyptic number.

It is an amenable number.

27012613 is a deficient number, since it is larger than the sum of its proper divisors (1).

27012613 is an equidigital number, since it uses as much as digits as its factorization.

27012613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 27012613 is about 5197.3659674878. The cubic root of 27012613 is about 300.0467075425.

Adding to 27012613 its reverse (31621072), we get a palindrome (58633685).

The spelling of 27012613 in words is "twenty-seven million, twelve thousand, six hundred thirteen".