16308666 has 48 divisors (see below), whose sum is σ = 39806208. Its totient is φ = 4780800.

The previous prime is 16308641. The next prime is 16308667. The reversal of 16308666 is 66680361.

It is a self number, because there is not a number n which added to its sum of digits gives 16308666.

It is not an unprimeable number, because it can be changed into a prime (16308667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4810 + ... + 7466.

It is an arithmetic number, because the mean of its divisors is an integer number (829296).

Almost surely, 2^16308666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16308666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19903104).

16308666 is an abundant number, since it is smaller than the sum of its proper divisors (23497542).

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

16308666 is a wasteful number, since it uses less digits than its factorization.

16308666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707 (or 2704 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 16308666 is about 4038.3989401742. The cubic root of 16308666 is about 253.5942951843.

It can be divided in two parts, 1630 and 8666, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 16308666 in words is "sixteen million, three hundred eight thousand, six hundred sixty-six".