6442630756 has 27 divisors (see below), whose sum is σ = 11464532499. Its totient is φ = 3167938488.

The previous prime is 6442630643. The next prime is 6442630757. The reversal of 6442630756 is 6570362446.

The square root of 6442630756 is 80266.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442630757) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10755345 + ... + 10755943.

Almost surely, 2^6442630756 is an apocalyptic number.

6442630756 is the 80266-th square number.

It is an amenable number.

6442630756 is a deficient number, since it is larger than the sum of its proper divisors (5021901743).

6442630756 is an frugal number, since it uses more digits than its factorization.

6442630756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 43.

The cubic root of 6442630756 is about 1860.7487982118.

The spelling of 6442630756 in words is "six billion, four hundred forty-two million, six hundred thirty thousand, seven hundred fifty-six".