670140329 has 2 divisors, whose sum is σ = 670140330. Its totient is φ = 670140328.

The previous prime is 670140313. The next prime is 670140347. The reversal of 670140329 is 923041076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 567725929 + 102414400 = 23827^2 + 10120^2 .

It is a cyclic number.

It is not a de Polignac number, because 670140329 - 2⁴ = 670140313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_34785302 and since 670140329 and 34785302 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 670140295 and 670140304.

It is not a weakly prime, because it can be changed into another prime (670146329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335070164 + 335070165.

It is an arithmetic number, because the mean of its divisors is an integer number (335070165).

Almost surely, 2^670140329 is an apocalyptic number.

It is an amenable number.

670140329 is a deficient number, since it is larger than the sum of its proper divisors (1).

670140329 is an equidigital number, since it uses as much as digits as its factorization.

670140329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 670140329 is about 25887.0687602903. The cubic root of 670140329 is about 875.0950988883.

The spelling of 670140329 in words is "six hundred seventy million, one hundred forty thousand, three hundred twenty-nine".