6612220577 has 2 divisors, whose sum is σ = 6612220578. Its totient is φ = 6612220576.

The previous prime is 6612220529. The next prime is 6612220579. The reversal of 6612220577 is 7750222166.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3431147776 + 3181072801 = 58576^2 + 56401^2 .

It is a cyclic number.

It is not a de Polignac number, because 6612220577 - 2¹⁸ = 6611958433 is a prime.

Together with 6612220579, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6612220577.

It is not a weakly prime, because it can be changed into another prime (6612220579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306110288 + 3306110289.

It is an arithmetic number, because the mean of its divisors is an integer number (3306110289).

Almost surely, 2^6612220577 is an apocalyptic number.

It is an amenable number.

6612220577 is a deficient number, since it is larger than the sum of its proper divisors (1).

6612220577 is an equidigital number, since it uses as much as digits as its factorization.

6612220577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 6612220577 is about 81315.5617148403. The cubic root of 6612220577 is about 1876.9344730042.

The spelling of 6612220577 in words is "six billion, six hundred twelve million, two hundred twenty thousand, five hundred seventy-seven".