6385820 has 24 divisors (see below), whose sum is σ = 15326304. Its totient is φ = 2189376.

The previous prime is 6385781. The next prime is 6385849. The reversal of 6385820 is 285836.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22667 + ... + 22946.

It is an arithmetic number, because the mean of its divisors is an integer number (638596).

Almost surely, 2^6385820 is an apocalyptic number.

It is an amenable number.

6385820 is an abundant number, since it is smaller than the sum of its proper divisors (8940484).

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

6385820 is a wasteful number, since it uses less digits than its factorization.

6385820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45629 (or 45627 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 6385820 is about 2527.0180054760. The cubic root of 6385820 is about 185.5263316805.

The spelling of 6385820 in words is "six million, three hundred eighty-five thousand, eight hundred twenty".