16664044 has 6 divisors (see below), whose sum is σ = 29162084. Its totient is φ = 8332020.

The previous prime is 16664027. The next prime is 16664057. The reversal of 16664044 is 44046661.

It is a super-3 number, since 3×16664044³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16663997 and 16664015.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083002 + ... + 2083009.

Almost surely, 2^16664044 is an apocalyptic number.

It is an amenable number.

16664044 is a deficient number, since it is larger than the sum of its proper divisors (12498040).

16664044 is a wasteful number, since it uses less digits than its factorization.

16664044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166015 (or 4166013 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 16664044 is about 4082.1616822463. The cubic root of 16664044 is about 255.4230782670.

The spelling of 16664044 in words is "sixteen million, six hundred sixty-four thousand, forty-four".