6446603344 has 20 divisors (see below), whose sum is σ = 12780767296. Its totient is φ = 3148340832.

The previous prime is 6446603327. The next prime is 6446603353. The reversal of 6446603344 is 4433066446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6446603297 and 6446603306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4684344 + ... + 4685719.

Almost surely, 2^6446603344 is an apocalyptic number.

It is an amenable number.

6446603344 is a deficient number, since it is larger than the sum of its proper divisors (6334163952).

6446603344 is a wasteful number, since it uses less digits than its factorization.

6446603344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9370114 (or 9370108 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 40.

The square root of 6446603344 is about 80290.7425797022. The cubic root of 6446603344 is about 1861.1311714909.

The spelling of 6446603344 in words is "six billion, four hundred forty-six million, six hundred three thousand, three hundred forty-four".