27040861 has 4 divisors (see below), whose sum is σ = 27109372. Its totient is φ = 26972352.

The previous prime is 27040837. The next prime is 27040907. The reversal of 27040861 is 16804072.

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 12744900 + 14295961 = 3570^2 + 3781^2 .

It is a cyclic number.

It is not a de Polignac number, because 27040861 - 2¹¹ = 27038813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27040261) 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, 33660 + ... + 34453.

It is an arithmetic number, because the mean of its divisors is an integer number (6777343).

Almost surely, 2^27040861 is an apocalyptic number.

It is an amenable number.

27040861 is a deficient number, since it is larger than the sum of its proper divisors (68511).

27040861 is an equidigital number, since it uses as much as digits as its factorization.

27040861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68510.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 27040861 is about 5200.0827878025. The cubic root of 27040861 is about 300.1512607582.

The spelling of 27040861 in words is "twenty-seven million, forty thousand, eight hundred sixty-one".