16664316 has 12 divisors (see below), whose sum is σ = 38883432. Its totient is φ = 5554768.

The previous prime is 16664261. The next prime is 16664317. The reversal of 16664316 is 61346661.

It is a tau number, because it is divible by the number of its divisors (12).

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 (16664317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694335 + ... + 694358.

It is an arithmetic number, because the mean of its divisors is an integer number (3240286).

Almost surely, 2^16664316 is an apocalyptic number.

It is an amenable number.

16664316 is an abundant number, since it is smaller than the sum of its proper divisors (22219116).

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

16664316 is a wasteful number, since it uses less digits than its factorization.

16664316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388700 (or 1388698 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 16664316 is about 4082.1949977922. The cubic root of 16664316 is about 255.4244679796.

The spelling of 16664316 in words is "sixteen million, six hundred sixty-four thousand, three hundred sixteen".