6438976 has 14 divisors (see below), whose sum is σ = 12777470. Its totient is φ = 3219456.

The previous prime is 6438973. The next prime is 6438983. The reversal of 6438976 is 6798346.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5760000 + 678976 = 2400^2 + 824^2 .

It is not an unprimeable number, because it can be changed into a prime (6438973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50241 + ... + 50368.

Almost surely, 2^6438976 is an apocalyptic number.

It is an amenable number.

6438976 is a deficient number, since it is larger than the sum of its proper divisors (6338494).

6438976 is a wasteful number, since it uses less digits than its factorization.

6438976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100621 (or 100611 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 6438976 is about 2537.5137438051. The cubic root of 6438976 is about 186.0396878350.

The spelling of 6438976 in words is "six million, four hundred thirty-eight thousand, nine hundred seventy-six".