16689654 has 24 divisors (see below), whose sum is σ = 36265320. Its totient is φ = 5547168.

The previous prime is 16689649. The next prime is 16689683. The reversal of 16689654 is 45698661.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6229 + ... + 8495.

It is an arithmetic number, because the mean of its divisors is an integer number (1511055).

Almost surely, 2^16689654 is an apocalyptic number.

16689654 is an abundant number, since it is smaller than the sum of its proper divisors (19575666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16689654 is a wasteful number, since it uses less digits than its factorization.

16689654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684 (or 2681 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 16689654 is about 4085.2972964033. The cubic root of 16689654 is about 255.5538595841.

The spelling of 16689654 in words is "sixteen million, six hundred eighty-nine thousand, six hundred fifty-four".