2666830643 has 2 divisors, whose sum is σ = 2666830644. Its totient is φ = 2666830642.

The previous prime is 2666830637. The next prime is 2666830667. The reversal of 2666830643 is 3460386662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2666830643 - 2¹⁰ = 2666829619 is a prime.

It is a super-2 number, since 2×2666830643² = 14223971356887586898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2666830594 and 2666830603.

It is not a weakly prime, because it can be changed into another prime (2666830043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333415321 + 1333415322.

It is an arithmetic number, because the mean of its divisors is an integer number (1333415322).

Almost surely, 2^2666830643 is an apocalyptic number.

2666830643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666830643 is an equidigital number, since it uses as much as digits as its factorization.

2666830643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 44.

The square root of 2666830643 is about 51641.3656190461. The cubic root of 2666830643 is about 1386.7509718285.

The spelling of 2666830643 in words is "two billion, six hundred sixty-six million, eight hundred thirty thousand, six hundred forty-three".