16689884 has 6 divisors (see below), whose sum is σ = 29207304. Its totient is φ = 8344940.

The previous prime is 16689863. The next prime is 16689887. The reversal of 16689884 is 48898661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16689887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2086232 + ... + 2086239.

It is an arithmetic number, because the mean of its divisors is an integer number (4867884).

Almost surely, 2^16689884 is an apocalyptic number.

It is an amenable number.

16689884 is a deficient number, since it is larger than the sum of its proper divisors (12517420).

16689884 is a wasteful number, since it uses less digits than its factorization.

16689884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172475 (or 4172473 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 16689884 is about 4085.3254460324. The cubic root of 16689884 is about 255.5550335073. Note that the first 3 decimals are identical.

The spelling of 16689884 in words is "sixteen million, six hundred eighty-nine thousand, eight hundred eighty-four".