16685004 has 48 divisors (see below), whose sum is σ = 44844800. Its totient is φ = 4729536.

The previous prime is 16684963. The next prime is 16685017. The reversal of 16685004 is 40058661.

16685004 is a modest number, since divided by 5004 gives 1668 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10962 + ... + 12390.

Almost surely, 2^16685004 is an apocalyptic number.

16685004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16685004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22422400).

16685004 is an abundant number, since it is smaller than the sum of its proper divisors (28159796).

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

16685004 is a wasteful number, since it uses less digits than its factorization.

16685004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1580 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 16685004 is about 4084.7281427287. The cubic root of 16685004 is about 255.5301236052.

The spelling of 16685004 in words is "sixteen million, six hundred eighty-five thousand, four".