6616179217 has 2 divisors, whose sum is σ = 6616179218. Its totient is φ = 6616179216.

The previous prime is 6616179197. The next prime is 6616179281. The reversal of 6616179217 is 7129716166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5320827136 + 1295352081 = 72944^2 + 35991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6616179217 is a prime.

It is not a weakly prime, because it can be changed into another prime (6616179917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308089608 + 3308089609.

It is an arithmetic number, because the mean of its divisors is an integer number (3308089609).

Almost surely, 2^6616179217 is an apocalyptic number.

It is an amenable number.

6616179217 is a deficient number, since it is larger than the sum of its proper divisors (1).

6616179217 is an equidigital number, since it uses as much as digits as its factorization.

6616179217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 6616179217 is about 81339.8992930284. The cubic root of 6616179217 is about 1877.3089627096.

The spelling of 6616179217 in words is "six billion, six hundred sixteen million, one hundred seventy-nine thousand, two hundred seventeen".