27102661 has 2 divisors, whose sum is σ = 27102662. Its totient is φ = 27102660.

The previous prime is 27102629. The next prime is 27102667. The reversal of 27102661 is 16620172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27102436 + 225 = 5206^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 27102661 - 2⁵ = 27102629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27102667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13551330 + 13551331.

It is an arithmetic number, because the mean of its divisors is an integer number (13551331).

Almost surely, 2^27102661 is an apocalyptic number.

It is an amenable number.

27102661 is a deficient number, since it is larger than the sum of its proper divisors (1).

27102661 is an equidigital number, since it uses as much as digits as its factorization.

27102661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 27102661 is about 5206.0216096363. The cubic root of 27102661 is about 300.3797450355.

The spelling of 27102661 in words is "twenty-seven million, one hundred two thousand, six hundred sixty-one".