6849810 has 144 divisors (see below), whose sum is σ = 21287448. Its totient is φ = 1520640.

The previous prime is 6849797. The next prime is 6849851. The reversal of 6849810 is 189486.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6796449 + 53361 = 2607^2 + 231^2 .

It is a super-2 number, since 2×6849810² = 93839794072200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 185112 + ... + 185148.

Almost surely, 2^6849810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6849810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10643724).

6849810 is an abundant number, since it is smaller than the sum of its proper divisors (14437638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6849810 is a wasteful number, since it uses less digits than its factorization.

6849810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 6849810 is about 2617.2141677746. The cubic root of 6849810 is about 189.9151051944.

The spelling of 6849810 in words is "six million, eight hundred forty-nine thousand, eight hundred ten".