6619622667 has 32 divisors (see below), whose sum is σ = 10623659520. Its totient is φ = 3581625600.

The previous prime is 6619622657. The next prime is 6619622767. The reversal of 6619622667 is 7662269166.

It is a happy number.

It is not a de Polignac number, because 6619622667 - 2⁷ = 6619622539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6619622627) 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 31 ways as a sum of consecutive naturals, for example, 1047417 + ... + 1053717.

It is an arithmetic number, because the mean of its divisors is an integer number (331989360).

Almost surely, 2^6619622667 is an apocalyptic number.

6619622667 is a deficient number, since it is larger than the sum of its proper divisors (4004036853).

6619622667 is a wasteful number, since it uses less digits than its factorization.

6619622667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8963.

The product of its digits is 1959552, while the sum is 51.

The square root of 6619622667 is about 81361.0635808063. The cubic root of 6619622667 is about 1877.6345936703.

The spelling of 6619622667 in words is "six billion, six hundred nineteen million, six hundred twenty-two thousand, six hundred sixty-seven".