6646456 has 16 divisors (see below), whose sum is σ = 13195440. Its totient is φ = 3127680.

The previous prime is 6646429. The next prime is 6646477. The reversal of 6646456 is 6546466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24300 + ... + 24571.

It is an arithmetic number, because the mean of its divisors is an integer number (824715).

Almost surely, 2^6646456 is an apocalyptic number.

It is an amenable number.

6646456 is a deficient number, since it is larger than the sum of its proper divisors (6548984).

6646456 is a wasteful number, since it uses less digits than its factorization.

6646456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48894 (or 48890 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 6646456 is about 2578.0721479431. The cubic root of 6646456 is about 188.0168236039.

The spelling of 6646456 in words is "six million, six hundred forty-six thousand, four hundred fifty-six".