16868664 has 24 divisors (see below), whose sum is σ = 45686160. Its totient is φ = 5622864.

The previous prime is 16868653. The next prime is 16868669. The reversal of 16868664 is 46686861.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16868669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117072 + ... + 117215.

It is an arithmetic number, because the mean of its divisors is an integer number (1903590).

Almost surely, 2^16868664 is an apocalyptic number.

It is an amenable number.

16868664 is an abundant number, since it is smaller than the sum of its proper divisors (28817496).

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

16868664 is a wasteful number, since it uses less digits than its factorization.

16868664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234299 (or 234292 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 16868664 is about 4107.1479155248. The cubic root of 16868664 is about 256.4642860345.

The spelling of 16868664 in words is "sixteen million, eight hundred sixty-eight thousand, six hundred sixty-four".