3345720529 has 2 divisors, whose sum is σ = 3345720530. Its totient is φ = 3345720528.

The previous prime is 3345720503. The next prime is 3345720551. The reversal of 3345720529 is 9250275433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2462442129 + 883278400 = 49623^2 + 29720^2 .

It is a cyclic number.

It is not a de Polignac number, because 3345720529 - 2⁹ = 3345720017 is a prime.

It is a super-2 number, since 2×3345720529² = 22387691716344079682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3345720491 and 3345720500.

It is not a weakly prime, because it can be changed into another prime (3345720589) 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, 1672860264 + 1672860265.

It is an arithmetic number, because the mean of its divisors is an integer number (1672860265).

Almost surely, 2^3345720529 is an apocalyptic number.

It is an amenable number.

3345720529 is a deficient number, since it is larger than the sum of its proper divisors (1).

3345720529 is an equidigital number, since it uses as much as digits as its factorization.

3345720529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 3345720529 is about 57842.2037011039. The cubic root of 3345720529 is about 1495.6496960265.

The spelling of 3345720529 in words is "three billion, three hundred forty-five million, seven hundred twenty thousand, five hundred twenty-nine".