6645244316 has 12 divisors (see below), whose sum is σ = 11629757832. Its totient is φ = 3322456368.

The previous prime is 6645244313. The next prime is 6645244349. The reversal of 6645244316 is 6134425466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645244313) 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, 111206 + ... + 160178.

It is an arithmetic number, because the mean of its divisors is an integer number (969146486).

Almost surely, 2^6645244316 is an apocalyptic number.

It is an amenable number.

6645244316 is a deficient number, since it is larger than the sum of its proper divisors (4984513516).

6645244316 is a wasteful number, since it uses less digits than its factorization.

6645244316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82900 (or 82898 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

The square root of 6645244316 is about 81518.3679669803. The cubic root of 6645244316 is about 1880.0539742313.

The spelling of 6645244316 in words is "six billion, six hundred forty-five million, two hundred forty-four thousand, three hundred sixteen".