3345220643 has 2 divisors, whose sum is σ = 3345220644. Its totient is φ = 3345220642.

The previous prime is 3345220639. The next prime is 3345220741. The reversal of 3345220643 is 3460225433.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3345220643 - 2² = 3345220639 is a prime.

It is a super-2 number, since 2×3345220643² = 22381002300706666898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3345280643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672610321 + 1672610322.

It is an arithmetic number, because the mean of its divisors is an integer number (1672610322).

Almost surely, 2^3345220643 is an apocalyptic number.

3345220643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3345220643 is an equidigital number, since it uses as much as digits as its factorization.

3345220643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 32.

The square root of 3345220643 is about 57837.8824214718. The cubic root of 3345220643 is about 1495.5752036936.

The spelling of 3345220643 in words is "three billion, three hundred forty-five million, two hundred twenty thousand, six hundred forty-three".