6884645 has 4 divisors (see below), whose sum is σ = 8261580. Its totient is φ = 5507712.

The previous prime is 6884641. The next prime is 6884653. The reversal of 6884645 is 5464886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4592449 + 2292196 = 2143^2 + 1514^2 .

It is a cyclic number.

It is not a de Polignac number, because 6884645 - 2² = 6884641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6884641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688460 + ... + 688469.

It is an arithmetic number, because the mean of its divisors is an integer number (2065395).

Almost surely, 2^6884645 is an apocalyptic number.

It is an amenable number.

6884645 is a deficient number, since it is larger than the sum of its proper divisors (1376935).

6884645 is a wasteful number, since it uses less digits than its factorization.

6884645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376934.

The product of its digits is 184320, while the sum is 41.

The square root of 6884645 is about 2623.8607051442. The cubic root of 6884645 is about 190.2365014312.

The spelling of 6884645 in words is "six million, eight hundred eighty-four thousand, six hundred forty-five".