16692661 has 16 divisors (see below), whose sum is σ = 18167040. Its totient is φ = 15301440.

The previous prime is 16692653. The next prime is 16692673. The reversal of 16692661 is 16629661.

It is a cyclic number.

It is not a de Polignac number, because 16692661 - 2³ = 16692653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16692661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16692631) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 50266 + ... + 50596.

It is an arithmetic number, because the mean of its divisors is an integer number (1135440).

Almost surely, 2^16692661 is an apocalyptic number.

It is an amenable number.

16692661 is a deficient number, since it is larger than the sum of its proper divisors (1474379).

16692661 is a wasteful number, since it uses less digits than its factorization.

16692661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its digits is 23328, while the sum is 37.

The square root of 16692661 is about 4085.6653068992. The cubic root of 16692661 is about 255.5692065032.

The spelling of 16692661 in words is "sixteen million, six hundred ninety-two thousand, six hundred sixty-one".