6330020643 has 40 divisors (see below), whose sum is σ = 9733708512. Its totient is φ = 4096583424.

The previous prime is 6330020623. The next prime is 6330020657. The reversal of 6330020643 is 3460200336.

6330020643 is a `hidden beast` number, since 633 + 0 + 0 + 20 + 6 + 4 + 3 = 666.

It is not a de Polignac number, because 6330020643 - 2¹⁷ = 6329889571 is a prime.

It is a super-2 number, since 2×6330020643² = 80138322681612266898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6330020623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1457371 + ... + 1461707.

Almost surely, 2^6330020643 is an apocalyptic number.

6330020643 is a deficient number, since it is larger than the sum of its proper divisors (3403687869).

6330020643 is a wasteful number, since it uses less digits than its factorization.

6330020643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873 (or 4864 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 6330020643 is about 79561.4268537210. The cubic root of 6330020643 is about 1849.8437309445.

Adding to 6330020643 its reverse (3460200336), we get a palindrome (9790220979).

The spelling of 6330020643 in words is "six billion, three hundred thirty million, twenty thousand, six hundred forty-three".