6447480 has 64 divisors (see below), whose sum is σ = 20835360. Its totient is φ = 1586688.

The previous prime is 6447457. The next prime is 6447533. The reversal of 6447480 is 847446.

6447480 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507 + ... + 3626.

Almost surely, 2^6447480 is an apocalyptic number.

6447480 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 6447480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10417680).

6447480 is an abundant number, since it is smaller than the sum of its proper divisors (14387880).

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

6447480 is a wasteful number, since it uses less digits than its factorization.

6447480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160 (or 4156 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 6447480 is about 2539.1888468564. The cubic root of 6447480 is about 186.1215531050.

The spelling of 6447480 in words is "six million, four hundred forty-seven thousand, four hundred eighty".