670326732809 has 2 divisors, whose sum is σ = 670326732810. Its totient is φ = 670326732808.

The previous prime is 670326732791. The next prime is 670326732839. The reversal of 670326732809 is 908237623076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585531040000 + 84795692809 = 765200^2 + 291197^2 .

It is a cyclic number.

It is not a de Polignac number, because 670326732809 - 2²⁰ = 670325684233 is a prime.

It is not a weakly prime, because it can be changed into another prime (670326732839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335163366404 + 335163366405.

It is an arithmetic number, because the mean of its divisors is an integer number (335163366405).

Almost surely, 2^670326732809 is an apocalyptic number.

It is an amenable number.

670326732809 is a deficient number, since it is larger than the sum of its proper divisors (1).

670326732809 is an equidigital number, since it uses as much as digits as its factorization.

670326732809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 670326732809 in words is "six hundred seventy billion, three hundred twenty-six million, seven hundred thirty-two thousand, eight hundred nine".