16662433 has 2 divisors, whose sum is σ = 16662434. Its totient is φ = 16662432.

The previous prime is 16662427. The next prime is 16662461. The reversal of 16662433 is 33426661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12027024 + 4635409 = 3468^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 16662433 - 2²¹ = 14565281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16662395 and 16662404.

It is not a weakly prime, because it can be changed into another prime (16662403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8331216 + 8331217.

It is an arithmetic number, because the mean of its divisors is an integer number (8331217).

Almost surely, 2^16662433 is an apocalyptic number.

It is an amenable number.

16662433 is a deficient number, since it is larger than the sum of its proper divisors (1).

16662433 is an equidigital number, since it uses as much as digits as its factorization.

16662433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 31.

The square root of 16662433 is about 4081.9643555524. The cubic root of 16662433 is about 255.4148469749.

The spelling of 16662433 in words is "sixteen million, six hundred sixty-two thousand, four hundred thirty-three".