27656149 has 2 divisors, whose sum is σ = 27656150. Its totient is φ = 27656148.

The previous prime is 27656137. The next prime is 27656197. The reversal of 27656149 is 94165672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 688900 = 5193^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 27656149 - 2⁵ = 27656117 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27656129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13828074 + 13828075.

It is an arithmetic number, because the mean of its divisors is an integer number (13828075).

Almost surely, 2^27656149 is an apocalyptic number.

It is an amenable number.

27656149 is a deficient number, since it is larger than the sum of its proper divisors (1).

27656149 is an equidigital number, since it uses as much as digits as its factorization.

27656149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 27656149 is about 5258.9113892516. The cubic root of 27656149 is about 302.4107570908.

The spelling of 27656149 in words is "twenty-seven million, six hundred fifty-six thousand, one hundred forty-nine".