16863366 has 32 divisors (see below), whose sum is σ = 36691200. Its totient is φ = 5135904.

The previous prime is 16863313. The next prime is 16863383. The reversal of 16863366 is 66336861.

It is a super-3 number, since 3×16863366³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 15 ways as a sum of consecutive naturals, for example, 6985 + ... + 9083.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^16863366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16863366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18345600).

16863366 is an abundant number, since it is smaller than the sum of its proper divisors (19827834).

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

16863366 is a wasteful number, since it uses less digits than its factorization.

16863366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220.

The product of its digits is 93312, while the sum is 39.

The square root of 16863366 is about 4106.5028917560. The cubic root of 16863366 is about 256.4374336795.

The spelling of 16863366 in words is "sixteen million, eight hundred sixty-three thousand, three hundred sixty-six".