27766069 has 2 divisors, whose sum is σ = 27766070. Its totient is φ = 27766068.

The previous prime is 27766043. The next prime is 27766093. The reversal of 27766069 is 96066772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 1295044 = 5145^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 27766069 - 2¹⁵ = 27733301 is a prime.

It is a super-2 number, since 2×27766069² = 1541909175425522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27766009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13883034 + 13883035.

It is an arithmetic number, because the mean of its divisors is an integer number (13883035).

Almost surely, 2^27766069 is an apocalyptic number.

It is an amenable number.

27766069 is a deficient number, since it is larger than the sum of its proper divisors (1).

27766069 is an equidigital number, since it uses as much as digits as its factorization.

27766069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 27766069 is about 5269.3518576766. The cubic root of 27766069 is about 302.8108736360.

It can be divided in two parts, 277660 and 69, that added together give a square (277729 = 527²).

The spelling of 27766069 in words is "twenty-seven million, seven hundred sixty-six thousand, sixty-nine".