6535820 has 48 divisors (see below), whose sum is σ = 14878080. Its totient is φ = 2402304.

The previous prime is 6535819. The next prime is 6535831. The reversal of 6535820 is 285356.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15776 + ... + 16184.

It is an arithmetic number, because the mean of its divisors is an integer number (309960).

Almost surely, 2^6535820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6535820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7439040).

6535820 is an abundant number, since it is smaller than the sum of its proper divisors (8342260).

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

6535820 is a wasteful number, since it uses less digits than its factorization.

6535820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 6535820 is about 2556.5249852094. The cubic root of 6535820 is about 186.9677468276.

The spelling of 6535820 in words is "six million, five hundred thirty-five thousand, eight hundred twenty".