3313668643 has 2 divisors, whose sum is σ = 3313668644. Its totient is φ = 3313668642.

The previous prime is 3313668629. The next prime is 3313668649. The reversal of 3313668643 is 3468663133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3313668643 - 2⁹ = 3313668131 is a prime.

It is a super-2 number, since 2×3313668643² = 21960799751202922898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3313668643.

It is not a weakly prime, because it can be changed into another prime (3313668649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1656834321 + 1656834322.

It is an arithmetic number, because the mean of its divisors is an integer number (1656834322).

Almost surely, 2^3313668643 is an apocalyptic number.

3313668643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3313668643 is an equidigital number, since it uses as much as digits as its factorization.

3313668643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 43.

The square root of 3313668643 is about 57564.4737924356. The cubic root of 3313668643 is about 1490.8582720939.

The spelling of 3313668643 in words is "three billion, three hundred thirteen million, six hundred sixty-eight thousand, six hundred forty-three".