6828149 has 4 divisors (see below), whose sum is σ = 6957036. Its totient is φ = 6699264.

The previous prime is 6828139. The next prime is 6828167. The reversal of 6828149 is 9418286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9418286 = 2 ⋅4709143.

It can be written as a sum of positive squares in 2 ways, for example, as 3972049 + 2856100 = 1993^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 6828149 - 2²⁰ = 5779573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6828109) 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, 64364 + ... + 64469.

It is an arithmetic number, because the mean of its divisors is an integer number (1739259).

Almost surely, 2^6828149 is an apocalyptic number.

It is an amenable number.

6828149 is a deficient number, since it is larger than the sum of its proper divisors (128887).

6828149 is a wasteful number, since it uses less digits than its factorization.

6828149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128886.

The product of its digits is 27648, while the sum is 38.

The square root of 6828149 is about 2613.0727123446. The cubic root of 6828149 is about 189.7147057185.

The spelling of 6828149 in words is "six million, eight hundred twenty-eight thousand, one hundred forty-nine".