35868221 has 2 divisors, whose sum is σ = 35868222. Its totient is φ = 35868220.

The previous prime is 35868211. The next prime is 35868241. The reversal of 35868221 is 12286853.

35868221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35868121 + 100 = 5989^2 + 10^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35868221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35868211) 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, 17934110 + 17934111.

It is an arithmetic number, because the mean of its divisors is an integer number (17934111).

Almost surely, 2^35868221 is an apocalyptic number.

It is an amenable number.

35868221 is a deficient number, since it is larger than the sum of its proper divisors (1).

35868221 is an equidigital number, since it uses as much as digits as its factorization.

35868221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 35868221 is about 5989.0083486334. The cubic root of 35868221 is about 329.7893390729.

The spelling of 35868221 in words is "thirty-five million, eight hundred sixty-eight thousand, two hundred twenty-one".