6449656 has 16 divisors (see below), whose sum is σ = 12375000. Its totient is φ = 3149664.

The previous prime is 6449617. The next prime is 6449659. The reversal of 6449656 is 6569446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6449659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9031 + ... + 9718.

Almost surely, 2^6449656 is an apocalyptic number.

It is an amenable number.

6449656 is a deficient number, since it is larger than the sum of its proper divisors (5925344).

6449656 is a wasteful number, since it uses less digits than its factorization.

6449656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18798 (or 18794 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 6449656 is about 2539.6172940032. The cubic root of 6449656 is about 186.1424891889.

The spelling of 6449656 in words is "six million, four hundred forty-nine thousand, six hundred fifty-six".