2685800 has 48 divisors (see below), whose sum is σ = 6731340. Its totient is φ = 990720.

The previous prime is 2685757. The next prime is 2685803. The reversal of 2685800 is 85862.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1240996 + 1444804 = 1114^2 + 1202^2 .

It is not an unprimeable number, because it can be changed into a prime (2685803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2084 + ... + 3116.

2^2685800 is an apocalyptic number.

2685800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2685800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3365670).

2685800 is an abundant number, since it is smaller than the sum of its proper divisors (4045540).

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

2685800 is a wasteful number, since it uses less digits than its factorization.

2685800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2685800 is about 1638.8410539158. The cubic root of 2685800 is about 139.0031226116.

The spelling of 2685800 in words is "two million, six hundred eighty-five thousand, eight hundred".