6449866 has 8 divisors (see below), whose sum is σ = 9705024. Its totient is φ = 3214860.

The previous prime is 6449837. The next prime is 6449881. The reversal of 6449866 is 6689446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 15.

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 3 ways as a sum of consecutive naturals, for example, 4210 + ... + 5533.

It is an arithmetic number, because the mean of its divisors is an integer number (1213128).

Almost surely, 2^6449866 is an apocalyptic number.

6449866 is a deficient number, since it is larger than the sum of its proper divisors (3255158).

6449866 is a wasteful number, since it uses less digits than its factorization.

6449866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10076.

The product of its digits is 248832, while the sum is 43.

The square root of 6449866 is about 2539.6586384788. The cubic root of 6449866 is about 186.1445094258.

The spelling of 6449866 in words is "six million, four hundred forty-nine thousand, eight hundred sixty-six".