6646080 has 224 divisors, whose sum is σ = 25749504. Its totient is φ = 1419264.

The previous prime is 6646049. The next prime is 6646153. The reversal of 6646080 is 806466.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154539 + ... + 154581.

Almost surely, 2^6646080 is an apocalyptic number.

6646080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6646080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12874752).

6646080 is an abundant number, since it is smaller than the sum of its proper divisors (19103424).

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

6646080 is a wasteful number, since it uses less digits than its factorization.

6646080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 6646080 is about 2577.9992242047. Note that the first 3 decimals coincide. The cubic root of 6646080 is about 188.0132780723.

The spelling of 6646080 in words is "six million, six hundred forty-six thousand, eighty".