671066129 has 2 divisors, whose sum is σ = 671066130. Its totient is φ = 671066128.

The previous prime is 671066113. The next prime is 671066131. The reversal of 671066129 is 921660176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403809025 + 267257104 = 20095^2 + 16348^2 .

It is a cyclic number.

It is not a de Polignac number, because 671066129 - 2⁴ = 671066113 is a prime.

Together with 671066131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 671066092 and 671066101.

It is not a weakly prime, because it can be changed into another prime (671066029) 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, 335533064 + 335533065.

It is an arithmetic number, because the mean of its divisors is an integer number (335533065).

Almost surely, 2^671066129 is an apocalyptic number.

It is an amenable number.

671066129 is a deficient number, since it is larger than the sum of its proper divisors (1).

671066129 is an equidigital number, since it uses as much as digits as its factorization.

671066129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 671066129 is about 25904.9441033946. The cubic root of 671066129 is about 875.4978952446.

The spelling of 671066129 in words is "six hundred seventy-one million, sixty-six thousand, one hundred twenty-nine".