16665433 has 2 divisors, whose sum is σ = 16665434. Its totient is φ = 16665432.

The previous prime is 16665421. The next prime is 16665461. The reversal of 16665433 is 33456661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13816089 + 2849344 = 3717^2 + 1688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16665433 is a prime.

It is not a weakly prime, because it can be changed into another prime (16665403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8332716 + 8332717.

It is an arithmetic number, because the mean of its divisors is an integer number (8332717).

Almost surely, 2^16665433 is an apocalyptic number.

It is an amenable number.

16665433 is a deficient number, since it is larger than the sum of its proper divisors (1).

16665433 is an equidigital number, since it uses as much as digits as its factorization.

16665433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 16665433 is about 4082.3318091503. The cubic root of 16665433 is about 255.4301748397.

The spelling of 16665433 in words is "sixteen million, six hundred sixty-five thousand, four hundred thirty-three".