16845664 has 24 divisors (see below), whose sum is σ = 36180648. Its totient is φ = 7656960.

The previous prime is 16845649. The next prime is 16845707. The reversal of 16845664 is 46654861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23577 + ... + 24280.

It is an arithmetic number, because the mean of its divisors is an integer number (1507527).

Almost surely, 2^16845664 is an apocalyptic number.

It is an amenable number.

16845664 is an abundant number, since it is smaller than the sum of its proper divisors (19334984).

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

16845664 is a wasteful number, since it uses less digits than its factorization.

16845664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47878 (or 47870 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 16845664 is about 4104.3469638908. The cubic root of 16845664 is about 256.3476721459.

The spelling of 16845664 in words is "sixteen million, eight hundred forty-five thousand, six hundred sixty-four".