666828683 has 2 divisors, whose sum is σ = 666828684. Its totient is φ = 666828682.

The previous prime is 666828653. The next prime is 666828691. The reversal of 666828683 is 386828666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666828683 - 2¹⁰ = 666827659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (666828623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333414341 + 333414342.

It is an arithmetic number, because the mean of its divisors is an integer number (333414342).

Almost surely, 2^666828683 is an apocalyptic number.

666828683 is a deficient number, since it is larger than the sum of its proper divisors (1).

666828683 is an equidigital number, since it uses as much as digits as its factorization.

666828683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3981312, while the sum is 53.

The square root of 666828683 is about 25823.0262169251. The cubic root of 666828683 is about 873.6512261562.

The spelling of 666828683 in words is "six hundred sixty-six million, eight hundred twenty-eight thousand, six hundred eighty-three".