6449216 has 14 divisors (see below), whose sum is σ = 12797790. Its totient is φ = 3224576.

The previous prime is 6449213. The next prime is 6449237. The reversal of 6449216 is 6129446.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5953600 + 495616 = 2440^2 + 704^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (6449213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50321 + ... + 50448.

Almost surely, 2^6449216 is an apocalyptic number.

It is an amenable number.

6449216 is a deficient number, since it is larger than the sum of its proper divisors (6348574).

6449216 is a wasteful number, since it uses less digits than its factorization.

6449216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100781 (or 100771 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 6449216 is about 2539.5306653002. The cubic root of 6449216 is about 186.1382561695.

The spelling of 6449216 in words is "six million, four hundred forty-nine thousand, two hundred sixteen".