16669946 has 8 divisors (see below), whose sum is σ = 25164660. Its totient is φ = 8281728.

The previous prime is 16669927. The next prime is 16669951. The reversal of 16669946 is 64996661.

It can be written as a sum of positive squares in 2 ways, for example, as 14523721 + 2146225 = 3811^2 + 1465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16669946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26231 + ... + 26858.

Almost surely, 2^16669946 is an apocalyptic number.

16669946 is a deficient number, since it is larger than the sum of its proper divisors (8494714).

16669946 is a wasteful number, since it uses less digits than its factorization.

16669946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53248.

The product of its digits is 419904, while the sum is 47.

The square root of 16669946 is about 4082.8845195523. The cubic root of 16669946 is about 255.4532295930.

The spelling of 16669946 in words is "sixteen million, six hundred sixty-nine thousand, nine hundred forty-six".