63006643 has 12 divisors (see below), whose sum is σ = 72731568. Its totient is φ = 53466480.

The previous prime is 63006613. The next prime is 63006659. The reversal of 63006643 is 34660036.

It is not a de Polignac number, because 63006643 - 2⁵ = 63006611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63006613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 282430 + ... + 282652.

It is an arithmetic number, because the mean of its divisors is an integer number (6060964).

Almost surely, 2^63006643 is an apocalyptic number.

63006643 is a deficient number, since it is larger than the sum of its proper divisors (9724925).

63006643 is an equidigital number, since it uses as much as digits as its factorization.

63006643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 63006643 is about 7937.6723918287. The cubic root of 63006643 is about 397.9197059473.

Adding to 63006643 its reverse (34660036), we get a palindrome (97666679).

The spelling of 63006643 in words is "sixty-three million, six thousand, six hundred forty-three".