27667669 has 2 divisors, whose sum is σ = 27667670. Its totient is φ = 27667668.

The previous prime is 27667621. The next prime is 27667681. The reversal of 27667669 is 96676672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14922769 + 12744900 = 3863^2 + 3570^2 .

It is a cyclic number.

It is not a de Polignac number, because 27667669 - 2¹³ = 27659477 is a prime.

It is a super-2 number, since 2×27667669² = 1530999815787122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27667609) 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, 13833834 + 13833835.

It is an arithmetic number, because the mean of its divisors is an integer number (13833835).

Almost surely, 2^27667669 is an apocalyptic number.

It is an amenable number.

27667669 is a deficient number, since it is larger than the sum of its proper divisors (1).

27667669 is an equidigital number, since it uses as much as digits as its factorization.

27667669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 49.

The square root of 27667669 is about 5260.0065589313. The cubic root of 27667669 is about 302.4527403801.

The spelling of 27667669 in words is "twenty-seven million, six hundred sixty-seven thousand, six hundred sixty-nine".