16332643 has 2 divisors, whose sum is σ = 16332644. Its totient is φ = 16332642.

The previous prime is 16332623. The next prime is 16332661. The reversal of 16332643 is 34623361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16332643 is a prime.

It is not a weakly prime, because it can be changed into another prime (16332623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8166321 + 8166322.

It is an arithmetic number, because the mean of its divisors is an integer number (8166322).

Almost surely, 2^16332643 is an apocalyptic number.

16332643 is a deficient number, since it is larger than the sum of its proper divisors (1).

16332643 is an equidigital number, since it uses as much as digits as its factorization.

16332643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

The square root of 16332643 is about 4041.3664768244. The cubic root of 16332643 is about 253.7185124364.

The spelling of 16332643 in words is "sixteen million, three hundred thirty-two thousand, six hundred forty-three".