6646450 has 12 divisors (see below), whose sum is σ = 12362490. Its totient is φ = 2658560.

The previous prime is 6646429. The next prime is 6646477. The reversal of 6646450 is 546466.

It can be written as a sum of positive squares in 3 ways, for example, as 5612161 + 1034289 = 2369^2 + 1017^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66415 + ... + 66514.

Almost surely, 2^6646450 is an apocalyptic number.

6646450 is a deficient number, since it is larger than the sum of its proper divisors (5716040).

6646450 is a wasteful number, since it uses less digits than its factorization.

6646450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132941 (or 132936 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 6646450 is about 2578.0709842826. The cubic root of 6646450 is about 188.0167670273.

The spelling of 6646450 in words is "six million, six hundred forty-six thousand, four hundred fifty".