27012769 has 6 divisors (see below), whose sum is σ = 31423074. Its totient is φ = 23153760.

The previous prime is 27012767. The next prime is 27012841. The reversal of 27012769 is 96721072.

It can be written as a sum of positive squares in only one way, i.e., 18533025 + 8479744 = 4305^2 + 2912^2 .

It is not a de Polignac number, because 27012769 - 2¹ = 27012767 is a prime.

It is a super-2 number, since 2×27012769² = 1459379378094722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27012761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275592 + ... + 275689.

It is an arithmetic number, because the mean of its divisors is an integer number (5237179).

Almost surely, 2^27012769 is an apocalyptic number.

It is an amenable number.

27012769 is a deficient number, since it is larger than the sum of its proper divisors (4410305).

27012769 is an equidigital number, since it uses as much as digits as its factorization.

27012769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551295 (or 551288 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 27012769 is about 5197.3809750681. The cubic root of 27012769 is about 300.0472851393.

The spelling of 27012769 in words is "twenty-seven million, twelve thousand, seven hundred sixty-nine".