6621610667 has 8 divisors (see below), whose sum is σ = 7569278976. Its totient is φ = 5674373352.

The previous prime is 6621610607. The next prime is 6621610673. The reversal of 6621610667 is 7660161266.

6621610667 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6621610667 - 2¹⁸ = 6621348523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6621610607) 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 7 ways as a sum of consecutive naturals, for example, 74123 + ... + 136884.

It is an arithmetic number, because the mean of its divisors is an integer number (946159872).

Almost surely, 2^6621610667 is an apocalyptic number.

6621610667 is a deficient number, since it is larger than the sum of its proper divisors (947668309).

6621610667 is a wasteful number, since it uses less digits than its factorization.

6621610667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215497.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6621610667 is about 81373.2798097754. The cubic root of 6621610667 is about 1877.8225381173.

The spelling of 6621610667 in words is "six billion, six hundred twenty-one million, six hundred ten thousand, six hundred sixty-seven".