27066761 has 4 divisors (see below), whose sum is σ = 27114900. Its totient is φ = 27018624.

The previous prime is 27066757. The next prime is 27066779. The reversal of 27066761 is 16766072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8231161 + 18835600 = 2869^2 + 4340^2 .

It is a cyclic number.

It is not a de Polignac number, because 27066761 - 2² = 27066757 is a prime.

It is a super-2 number, since 2×27066761² = 1465219102062242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27066731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23216 + ... + 24353.

It is an arithmetic number, because the mean of its divisors is an integer number (6778725).

Almost surely, 2^27066761 is an apocalyptic number.

It is an amenable number.

27066761 is a deficient number, since it is larger than the sum of its proper divisors (48139).

27066761 is an equidigital number, since it uses as much as digits as its factorization.

27066761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48138.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 27066761 is about 5202.5725367360. The cubic root of 27066761 is about 300.2470594459.

The spelling of 27066761 in words is "twenty-seven million, sixty-six thousand, seven hundred sixty-one".