27698849 has 2 divisors, whose sum is σ = 27698850. Its totient is φ = 27698848.

The previous prime is 27698813. The next prime is 27698887. The reversal of 27698849 is 94889672.

27698849 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19536400 + 8162449 = 4420^2 + 2857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27698849 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27698849.

It is not a weakly prime, because it can be changed into another prime (27698809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13849424 + 13849425.

It is an arithmetic number, because the mean of its divisors is an integer number (13849425).

Almost surely, 2^27698849 is an apocalyptic number.

It is an amenable number.

27698849 is a deficient number, since it is larger than the sum of its proper divisors (1).

27698849 is an equidigital number, since it uses as much as digits as its factorization.

27698849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 27698849 is about 5262.9695990002. The cubic root of 27698849 is about 302.5663138090.

The spelling of 27698849 in words is "twenty-seven million, six hundred ninety-eight thousand, eight hundred forty-nine".