16660675 has 6 divisors (see below), whose sum is σ = 20659268. Its totient is φ = 13328520.

The previous prime is 16660639. The next prime is 16660681. The reversal of 16660675 is 57606661.

It is a happy number.

It is not a de Polignac number, because 16660675 - 2¹¹ = 16658627 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 333189 + ... + 333238.

Almost surely, 2^16660675 is an apocalyptic number.

16660675 is a deficient number, since it is larger than the sum of its proper divisors (3998593).

16660675 is an equidigital number, since it uses as much as digits as its factorization.

16660675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666437 (or 666432 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 16660675 is about 4081.7490123720. The cubic root of 16660675 is about 255.4058639912.

The spelling of 16660675 in words is "sixteen million, six hundred sixty thousand, six hundred seventy-five".