16665133 has 8 divisors (see below), whose sum is σ = 17860608. Its totient is φ = 15508944.

The previous prime is 16665043. The next prime is 16665137. The reversal of 16665133 is 33156661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16665133 - 2¹⁷ = 16534061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16665095 and 16665104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16665137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8941 + ... + 10642.

It is an arithmetic number, because the mean of its divisors is an integer number (2232576).

Almost surely, 2^16665133 is an apocalyptic number.

It is an amenable number.

16665133 is a deficient number, since it is larger than the sum of its proper divisors (1195475).

16665133 is a wasteful number, since it uses less digits than its factorization.

16665133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19643.

The product of its digits is 9720, while the sum is 31.

The square root of 16665133 is about 4082.2950652788. The cubic root of 16665133 is about 255.4286421360.

The spelling of 16665133 in words is "sixteen million, six hundred sixty-five thousand, one hundred thirty-three".