6449960 has 64 divisors (see below), whose sum is σ = 16096320. Its totient is φ = 2306560.

The previous prime is 6449923. The next prime is 6450007. The reversal of 6449960 is 699446.

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, 47012 + ... + 47148.

It is an arithmetic number, because the mean of its divisors is an integer number (251505).

Almost surely, 2^6449960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6449960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8048160).

6449960 is an abundant number, since it is smaller than the sum of its proper divisors (9646360).

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

6449960 is a wasteful number, since it uses less digits than its factorization.

6449960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6449960 is about 2539.6771448355. The cubic root of 6449960 is about 186.1454137081.

The spelling of 6449960 in words is "six million, four hundred forty-nine thousand, nine hundred sixty".