6645235 has 8 divisors (see below), whose sum is σ = 8049456. Its totient is φ = 5266080.

The previous prime is 6645227. The next prime is 6645259. The reversal of 6645235 is 5325466.

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

It is not a de Polignac number, because 6645235 - 2³ = 6645227 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6645197 and 6645206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5676 + ... + 6745.

It is an arithmetic number, because the mean of its divisors is an integer number (1006182).

Almost surely, 2^6645235 is an apocalyptic number.

6645235 is a deficient number, since it is larger than the sum of its proper divisors (1404221).

6645235 is a wasteful number, since it uses less digits than its factorization.

6645235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12533.

The product of its digits is 21600, while the sum is 31.

The square root of 6645235 is about 2577.8353322119. The cubic root of 6645235 is about 188.0053095679.

The spelling of 6645235 in words is "six million, six hundred forty-five thousand, two hundred thirty-five".