6495820 has 12 divisors (see below), whose sum is σ = 13641264. Its totient is φ = 2598320.

The previous prime is 6495809. The next prime is 6495847. The reversal of 6495820 is 285946.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162376 + ... + 162415.

It is an arithmetic number, because the mean of its divisors is an integer number (1136772).

Almost surely, 2^6495820 is an apocalyptic number.

It is an amenable number.

6495820 is an abundant number, since it is smaller than the sum of its proper divisors (7145444).

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

6495820 is a wasteful number, since it uses less digits than its factorization.

6495820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324800 (or 324798 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 6495820 is about 2548.6898595161. The cubic root of 6495820 is about 186.5855443992.

The spelling of 6495820 in words is "six million, four hundred ninety-five thousand, eight hundred twenty".