6645115 has 8 divisors (see below), whose sum is σ = 7993440. Its totient is φ = 5303232.

The previous prime is 6645083. The next prime is 6645131. The reversal of 6645115 is 5115466.

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 6645115 - 2⁵ = 6645083 is a prime.

6645115 is a lucky number.

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, 1071 + ... + 3799.

It is an arithmetic number, because the mean of its divisors is an integer number (999180).

Almost surely, 2^6645115 is an apocalyptic number.

6645115 is a deficient number, since it is larger than the sum of its proper divisors (1348325).

6645115 is a wasteful number, since it uses less digits than its factorization.

6645115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221.

The product of its digits is 3600, while the sum is 28.

The square root of 6645115 is about 2577.8120567644. The cubic root of 6645115 is about 188.0041778912.

It can be divided in two parts, 66451 and 15, that added together give a palindrome (66466).

The spelling of 6645115 in words is "six million, six hundred forty-five thousand, one hundred fifteen".