16649716 has 12 divisors (see below), whose sum is σ = 29207332. Its totient is φ = 8304768.

The previous prime is 16649687. The next prime is 16649753. The reversal of 16649716 is 61794661.

It can be written as a sum of positive squares in 2 ways, for example, as 10627600 + 6022116 = 3260^2 + 2454^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075 + ... + 6538.

Almost surely, 2^16649716 is an apocalyptic number.

It is an amenable number.

16649716 is a deficient number, since it is larger than the sum of its proper divisors (12557616).

16649716 is a wasteful number, since it uses less digits than its factorization.

16649716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050 (or 10048 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 16649716 is about 4080.4063523135. The cubic root of 16649716 is about 255.3498517189.

The spelling of 16649716 in words is "sixteen million, six hundred forty-nine thousand, seven hundred sixteen".