16663245 has 16 divisors (see below), whose sum is σ = 26801280. Its totient is φ = 8840384.

The previous prime is 16663243. The next prime is 16663259. The reversal of 16663245 is 54236661.

It is a cyclic number.

It is not a de Polignac number, because 16663245 - 2¹ = 16663243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136 + ... + 5774.

It is an arithmetic number, because the mean of its divisors is an integer number (1675080).

Almost surely, 2^16663245 is an apocalyptic number.

16663245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16663245 is a deficient number, since it is larger than the sum of its proper divisors (10138035).

16663245 is a wasteful number, since it uses less digits than its factorization.

16663245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844.

The product of its digits is 25920, while the sum is 33.

The square root of 16663245 is about 4082.0638162577. The cubic root of 16663245 is about 255.4189958985.

The spelling of 16663245 in words is "sixteen million, six hundred sixty-three thousand, two hundred forty-five".