6606621063 has 24 divisors (see below), whose sum is σ = 11310103168. Its totient is φ = 3775211064.

The previous prime is 6606621041. The next prime is 6606621083. The reversal of 6606621063 is 3601266066.

It is not a de Polignac number, because 6606621063 - 2⁹ = 6606620551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606621083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1940281 + ... + 1943682.

Almost surely, 2^6606621063 is an apocalyptic number.

6606621063 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6606621063 is a deficient number, since it is larger than the sum of its proper divisors (4703482105).

6606621063 is an equidigital number, since it uses as much as digits as its factorization.

6606621063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883985 (or 3883973 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 6606621063 is about 81281.1236573413. The cubic root of 6606621063 is about 1876.4045003127.

The spelling of 6606621063 in words is "six billion, six hundred six million, six hundred twenty-one thousand, sixty-three".