16646994 has 48 divisors (see below), whose sum is σ = 44396352. Its totient is φ = 4389984.

The previous prime is 16646923. The next prime is 16647013. The reversal of 16646994 is 49964661.

16646994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3444 + ... + 6719.

It is an arithmetic number, because the mean of its divisors is an integer number (924924).

Almost surely, 2^16646994 is an apocalyptic number.

16646994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16646994 is an abundant number, since it is smaller than the sum of its proper divisors (27749358).

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

16646994 is a wasteful number, since it uses less digits than its factorization.

16646994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191 (or 10188 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 16646994 is about 4080.0727934683. The cubic root of 16646994 is about 255.3359355621.

The spelling of 16646994 in words is "sixteen million, six hundred forty-six thousand, nine hundred ninety-four".