16649333 has 2 divisors, whose sum is σ = 16649334. Its totient is φ = 16649332.

The previous prime is 16649323. The next prime is 16649351. The reversal of 16649333 is 33394661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11992369 + 4656964 = 3463^2 + 2158^2 .

It is an emirp because it is prime and its reverse (33394661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16649333 - 2⁴ = 16649317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16649293 and 16649302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16649323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8324666 + 8324667.

It is an arithmetic number, because the mean of its divisors is an integer number (8324667).

Almost surely, 2^16649333 is an apocalyptic number.

It is an amenable number.

16649333 is a deficient number, since it is larger than the sum of its proper divisors (1).

16649333 is an equidigital number, since it uses as much as digits as its factorization.

16649333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The square root of 16649333 is about 4080.3594204433. The cubic root of 16649333 is about 255.3478937327.

The spelling of 16649333 in words is "sixteen million, six hundred forty-nine thousand, three hundred thirty-three".