16668075 has 36 divisors (see below), whose sum is σ = 29312360. Its totient is φ = 8355840.

The previous prime is 16668037. The next prime is 16668079. The reversal of 16668075 is 57086661.

It is not a de Polignac number, because 16668075 - 2¹⁰ = 16667051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16668079) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21291 + ... + 22059.

Almost surely, 2^16668075 is an apocalyptic number.

16668075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16668075 is a deficient number, since it is larger than the sum of its proper divisors (12644285).

16668075 is a wasteful number, since it uses less digits than its factorization.

16668075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 16668075 is about 4082.6553858978. The cubic root of 16668075 is about 255.4436720560.

The spelling of 16668075 in words is "sixteen million, six hundred sixty-eight thousand, seventy-five".