6628644633 has 8 divisors (see below), whose sum is σ = 9518053888. Its totient is φ = 4079165904.

The previous prime is 6628644629. The next prime is 6628644653. The reversal of 6628644633 is 3364468266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6628644633 - 2² = 6628644629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6628644613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84982585 + ... + 84982662.

It is an arithmetic number, because the mean of its divisors is an integer number (1189756736).

Almost surely, 2^6628644633 is an apocalyptic number.

It is an amenable number.

6628644633 is a deficient number, since it is larger than the sum of its proper divisors (2889409255).

6628644633 is a wasteful number, since it uses less digits than its factorization.

6628644633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169965263.

The product of its digits is 2985984, while the sum is 48.

The square root of 6628644633 is about 81416.4887046844. The cubic root of 6628644633 is about 1878.4872236084.

The spelling of 6628644633 in words is "six billion, six hundred twenty-eight million, six hundred forty-four thousand, six hundred thirty-three".