6450816 has 64 divisors (see below), whose sum is σ = 17405280. Its totient is φ = 2116608.

The previous prime is 6450799. The next prime is 6450841. The reversal of 6450816 is 6180546.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×6450816² = 83226054131712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41010 + ... + 41166.

Almost surely, 2^6450816 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 6450816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8702640).

6450816 is an abundant number, since it is smaller than the sum of its proper divisors (10954464).

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

6450816 is a wasteful number, since it uses less digits than its factorization.

6450816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 6450816 is about 2539.8456646025. The cubic root of 6450816 is about 186.1536480447.

The spelling of 6450816 in words is "six million, four hundred fifty thousand, eight hundred sixteen".