667343666659 has 2 divisors, whose sum is σ = 667343666660. Its totient is φ = 667343666658.

The previous prime is 667343666641. The next prime is 667343666779. The reversal of 667343666659 is 956666343766.

667343666659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667343666659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667343666594 and 667343666603.

It is not a weakly prime, because it can be changed into another prime (667343666609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333671833329 + 333671833330.

It is an arithmetic number, because the mean of its divisors is an integer number (333671833330).

Almost surely, 2^667343666659 is an apocalyptic number.

667343666659 is a deficient number, since it is larger than the sum of its proper divisors (1).

667343666659 is an equidigital number, since it uses as much as digits as its factorization.

667343666659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529079040, while the sum is 67.

The spelling of 667343666659 in words is "six hundred sixty-seven billion, three hundred forty-three million, six hundred sixty-six thousand, six hundred fifty-nine".