6459966 has 64 divisors (see below), whose sum is σ = 15759360. Its totient is φ = 1952640.

The previous prime is 6459923. The next prime is 6459979. The reversal of 6459966 is 6699546.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 28345 + ... + 28571.

It is an arithmetic number, because the mean of its divisors is an integer number (246240).

Almost surely, 2^6459966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6459966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7879680).

6459966 is an abundant number, since it is smaller than the sum of its proper divisors (9299394).

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

6459966 is a wasteful number, since it uses less digits than its factorization.

6459966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 280 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 6459966 is about 2541.6463168584. The cubic root of 6459966 is about 186.2416214720.

The spelling of 6459966 in words is "six million, four hundred fifty-nine thousand, nine hundred sixty-six".