20068849 has 2 divisors, whose sum is σ = 20068850. Its totient is φ = 20068848.

The previous prime is 20068799. The next prime is 20068871. The reversal of 20068849 is 94886002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 5438224 = 3825^2 + 2332^2 .

It is a cyclic number.

It is not a de Polignac number, because 20068849 - 2¹⁷ = 19937777 is a prime.

It is not a weakly prime, because it can be changed into another prime (20068049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10034424 + 10034425.

It is an arithmetic number, because the mean of its divisors is an integer number (10034425).

Almost surely, 2^20068849 is an apocalyptic number.

It is an amenable number.

20068849 is a deficient number, since it is larger than the sum of its proper divisors (1).

20068849 is an equidigital number, since it uses as much as digits as its factorization.

20068849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 20068849 is about 4479.8268939770. The cubic root of 20068849 is about 271.7528798267.

The spelling of 20068849 in words is "twenty million, sixty-eight thousand, eight hundred forty-nine".