6330643506 has 32 divisors (see below), whose sum is σ = 15347016000. Its totient is φ = 1918376640.

The previous prime is 6330643493. The next prime is 6330643507. The reversal of 6330643506 is 6053460336.

It is a happy number.

6330643506 is a `hidden beast` number, since 6 + 3 + 3 + 0 + 643 + 5 + 0 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (6330643507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5328231 + ... + 5329418.

It is an arithmetic number, because the mean of its divisors is an integer number (479594250).

Almost surely, 2^6330643506 is an apocalyptic number.

6330643506 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6330643506 is an abundant number, since it is smaller than the sum of its proper divisors (9016372494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6330643506 is a wasteful number, since it uses less digits than its factorization.

6330643506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10657671 (or 10657665 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

The square root of 6330643506 is about 79565.3411103101. The cubic root of 6330643506 is about 1849.9044027544.

The spelling of 6330643506 in words is "six billion, three hundred thirty million, six hundred forty-three thousand, five hundred six".