27040661 has 2 divisors, whose sum is σ = 27040662. Its totient is φ = 27040660.

The previous prime is 27040631. The next prime is 27040681. The reversal of 27040661 is 16604072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25300900 + 1739761 = 5030^2 + 1319^2 .

It is a cyclic number.

It is not a de Polignac number, because 27040661 - 2²² = 22846357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27040661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27040631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13520330 + 13520331.

It is an arithmetic number, because the mean of its divisors is an integer number (13520331).

Almost surely, 2^27040661 is an apocalyptic number.

It is an amenable number.

27040661 is a deficient number, since it is larger than the sum of its proper divisors (1).

27040661 is an equidigital number, since it uses as much as digits as its factorization.

27040661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 27040661 is about 5200.0635573039. The cubic root of 27040661 is about 300.1505207620.

The spelling of 27040661 in words is "twenty-seven million, forty thousand, six hundred sixty-one".