6845149 has 4 divisors (see below), whose sum is σ = 7205440. Its totient is φ = 6484860.

The previous prime is 6845117. The next prime is 6845161. The reversal of 6845149 is 9415486.

It is a happy number.

6845149 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6845149 - 2⁵ = 6845117 is a prime.

It is a Duffinian number.

6845149 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6845549) by changing a digit.

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, 180117 + ... + 180154.

It is an arithmetic number, because the mean of its divisors is an integer number (1801360).

Almost surely, 2^6845149 is an apocalyptic number.

It is an amenable number.

6845149 is a deficient number, since it is larger than the sum of its proper divisors (360291).

6845149 is a wasteful number, since it uses less digits than its factorization.

6845149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360290.

The product of its digits is 34560, while the sum is 37.

The square root of 6845149 is about 2616.3235656165. The cubic root of 6845149 is about 189.8720190766.

The spelling of 6845149 in words is "six million, eight hundred forty-five thousand, one hundred forty-nine".