27158669 has 2 divisors, whose sum is σ = 27158670. Its totient is φ = 27158668.

The previous prime is 27158641. The next prime is 27158689. The reversal of 27158669 is 96685172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25300900 + 1857769 = 5030^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 27158669 - 2¹⁶ = 27093133 is a prime.

It is a super-2 number, since 2×27158669² = 1475186603703122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27158609) 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, 13579334 + 13579335.

It is an arithmetic number, because the mean of its divisors is an integer number (13579335).

Almost surely, 2^27158669 is an apocalyptic number.

It is an amenable number.

27158669 is a deficient number, since it is larger than the sum of its proper divisors (1).

27158669 is an equidigital number, since it uses as much as digits as its factorization.

27158669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 27158669 is about 5211.3979890237. The cubic root of 27158669 is about 300.5865155474.

The spelling of 27158669 in words is "twenty-seven million, one hundred fifty-eight thousand, six hundred sixty-nine".