6480820 has 24 divisors (see below), whose sum is σ = 13674528. Its totient is φ = 2580000.

The previous prime is 6480811. The next prime is 6480827. The reversal of 6480820 is 280846.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6480827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4375 + ... + 5665.

It is an arithmetic number, because the mean of its divisors is an integer number (569772).

Almost surely, 2^6480820 is an apocalyptic number.

It is an amenable number.

6480820 is an abundant number, since it is smaller than the sum of its proper divisors (7193708).

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

6480820 is a wasteful number, since it uses less digits than its factorization.

6480820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 6480820 is about 2545.7454703878. The cubic root of 6480820 is about 186.4418140090.

The spelling of 6480820 in words is "six million, four hundred eighty thousand, eight hundred twenty".