16624841 has 2 divisors, whose sum is σ = 16624842. Its totient is φ = 16624840.

The previous prime is 16624823. The next prime is 16624889. The reversal of 16624841 is 14842661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10374841 + 6250000 = 3221^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 16624841 - 2¹⁴ = 16608457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16624798 and 16624807.

It is not a weakly prime, because it can be changed into another prime (16624891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8312420 + 8312421.

It is an arithmetic number, because the mean of its divisors is an integer number (8312421).

Almost surely, 2^16624841 is an apocalyptic number.

It is an amenable number.

16624841 is a deficient number, since it is larger than the sum of its proper divisors (1).

16624841 is an equidigital number, since it uses as much as digits as its factorization.

16624841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 16624841 is about 4077.3571096974. The cubic root of 16624841 is about 255.2226224528. Note that the first 3 decimals are identical.

The spelling of 16624841 in words is "sixteen million, six hundred twenty-four thousand, eight hundred forty-one".