6643080 has 64 divisors (see below), whose sum is σ = 22147200. Its totient is φ = 1771200.

The previous prime is 6643069. The next prime is 6643097. The reversal of 6643080 is 803466.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 1996 + ... + 4155.

It is an arithmetic number, because the mean of its divisors is an integer number (346050).

Almost surely, 2^6643080 is an apocalyptic number.

6643080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6643080 is an abundant number, since it is smaller than the sum of its proper divisors (15504120).

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

6643080 is a wasteful number, since it uses less digits than its factorization.

6643080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171 (or 6161 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6643080 is about 2577.4173119617. The cubic root of 6643080 is about 187.9849844654.

The spelling of 6643080 in words is "six million, six hundred forty-three thousand, eighty".