27660949 has 2 divisors, whose sum is σ = 27660950. Its totient is φ = 27660948.

The previous prime is 27660929. The next prime is 27660977. The reversal of 27660949 is 94906672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25180324 + 2480625 = 5018^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 27660949 - 2¹⁷ = 27529877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27660929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13830474 + 13830475.

It is an arithmetic number, because the mean of its divisors is an integer number (13830475).

Almost surely, 2^27660949 is an apocalyptic number.

It is an amenable number.

27660949 is a deficient number, since it is larger than the sum of its proper divisors (1).

27660949 is an equidigital number, since it uses as much as digits as its factorization.

27660949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 27660949 is about 5259.3677376658. The cubic root of 27660949 is about 302.4282515446.

The spelling of 27660949 in words is "twenty-seven million, six hundred sixty thousand, nine hundred forty-nine".