16650841 has 2 divisors, whose sum is σ = 16650842. Its totient is φ = 16650840.

The previous prime is 16650839. The next prime is 16650863. The reversal of 16650841 is 14805661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12809241 + 3841600 = 3579^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 16650841 - 2¹ = 16650839 is a prime.

Together with 16650839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16650811) 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, 8325420 + 8325421.

It is an arithmetic number, because the mean of its divisors is an integer number (8325421).

Almost surely, 2^16650841 is an apocalyptic number.

It is an amenable number.

16650841 is a deficient number, since it is larger than the sum of its proper divisors (1).

16650841 is an equidigital number, since it uses as much as digits as its factorization.

16650841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 16650841 is about 4080.5442039022. The cubic root of 16650841 is about 255.3556028103.

The spelling of 16650841 in words is "sixteen million, six hundred fifty thousand, eight hundred forty-one".