6690187 has 16 divisors (see below), whose sum is σ = 7902720. Its totient is φ = 5545728.

The previous prime is 6690179. The next prime is 6690191. The reversal of 6690187 is 7810966.

6690187 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6690187 - 2³ = 6690179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6690107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39978 + ... + 40144.

It is an arithmetic number, because the mean of its divisors is an integer number (493920).

Almost surely, 2^6690187 is an apocalyptic number.

6690187 is a deficient number, since it is larger than the sum of its proper divisors (1212533).

6690187 is a wasteful number, since it uses less digits than its factorization.

6690187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 6690187 is about 2586.5395802114. The cubic root of 6690187 is about 188.4282808025.

The spelling of 6690187 in words is "six million, six hundred ninety thousand, one hundred eighty-seven".