6612220529 has 2 divisors, whose sum is σ = 6612220530. Its totient is φ = 6612220528.

The previous prime is 6612220469. The next prime is 6612220577. The reversal of 6612220529 is 9250222166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5849190400 + 763030129 = 76480^2 + 27623^2 .

It is a cyclic number.

It is not a de Polignac number, because 6612220529 - 2³² = 2317253233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6612220579) 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 as a sum of consecutive naturals, namely, 3306110264 + 3306110265.

It is an arithmetic number, because the mean of its divisors is an integer number (3306110265).

Almost surely, 2^6612220529 is an apocalyptic number.

It is an amenable number.

6612220529 is a deficient number, since it is larger than the sum of its proper divisors (1).

6612220529 is an equidigital number, since it uses as much as digits as its factorization.

6612220529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 6612220529 is about 81315.5614196938. The cubic root of 6612220529 is about 1876.9344684624.

The spelling of 6612220529 in words is "six billion, six hundred twelve million, two hundred twenty thousand, five hundred twenty-nine".