16685648 has 40 divisors (see below), whose sum is σ = 38896320. Its totient is φ = 6773760.

The previous prime is 16685633. The next prime is 16685663. The reversal of 16685648 is 84658661.

It is an interprime number because it is at equal distance from previous prime (16685633) and next prime (16685663).

It is a junction number, because it is equal to n+sod(n) for n = 16685599 and 16685608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793 + ... + 6048.

It is an arithmetic number, because the mean of its divisors is an integer number (972408).

Almost surely, 2^16685648 is an apocalyptic number.

It is an amenable number.

16685648 is an abundant number, since it is smaller than the sum of its proper divisors (22210672).

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

16685648 is a wasteful number, since it uses less digits than its factorization.

16685648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875 (or 7869 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 16685648 is about 4084.8069721836. The cubic root of 16685648 is about 255.5334111737.

The spelling of 16685648 in words is "sixteen million, six hundred eighty-five thousand, six hundred forty-eight".