6672845 has 4 divisors (see below), whose sum is σ = 8007420. Its totient is φ = 5338272.

The previous prime is 6672817. The next prime is 6672863. The reversal of 6672845 is 5482766.

It is a happy number.

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 4380649 + 2292196 = 2093^2 + 1514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6672845 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6672799 and 6672808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667280 + ... + 667289.

It is an arithmetic number, because the mean of its divisors is an integer number (2001855).

Almost surely, 2^6672845 is an apocalyptic number.

It is an amenable number.

6672845 is a deficient number, since it is larger than the sum of its proper divisors (1334575).

6672845 is a wasteful number, since it uses less digits than its factorization.

6672845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334574.

The product of its digits is 80640, while the sum is 38.

The square root of 6672845 is about 2583.1850495077. The cubic root of 6672845 is about 188.2653281676.

The spelling of 6672845 in words is "six million, six hundred seventy-two thousand, eight hundred forty-five".