660662339 has 2 divisors, whose sum is σ = 660662340. Its totient is φ = 660662338.

The previous prime is 660662323. The next prime is 660662383. The reversal of 660662339 is 933266066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660662339 - 2⁴ = 660662323 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 660662296 and 660662305.

It is not a weakly prime, because it can be changed into another prime (660662399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330331169 + 330331170.

It is an arithmetic number, because the mean of its divisors is an integer number (330331170).

Almost surely, 2^660662339 is an apocalyptic number.

660662339 is a deficient number, since it is larger than the sum of its proper divisors (1).

660662339 is an equidigital number, since it uses as much as digits as its factorization.

660662339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 41.

The square root of 660662339 is about 25703.3526801466. The cubic root of 660662339 is about 870.9499198552.

The spelling of 660662339 in words is "six hundred sixty million, six hundred sixty-two thousand, three hundred thirty-nine".