16636616 has 8 divisors (see below), whose sum is σ = 31193670. Its totient is φ = 8318304.

The previous prime is 16636583. The next prime is 16636639. The reversal of 16636616 is 61663661.

It can be written as a sum of positive squares in only one way, i.e., 16080100 + 556516 = 4010^2 + 746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039781 + ... + 1039796.

Almost surely, 2^16636616 is an apocalyptic number.

It is an amenable number.

16636616 is a deficient number, since it is larger than the sum of its proper divisors (14557054).

16636616 is a wasteful number, since it uses less digits than its factorization.

16636616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079583 (or 2079579 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 16636616 is about 4078.8008041580. The cubic root of 16636616 is about 255.2828643752.

The spelling of 16636616 in words is "sixteen million, six hundred thirty-six thousand, six hundred sixteen".