670129 has 2 divisors, whose sum is σ = 670130. Its totient is φ = 670128.

The previous prime is 670099. The next prime is 670139. The reversal of 670129 is 921076.

670129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425104 + 245025 = 652^2 + 495^2 .

It is a cyclic number.

It is not a de Polignac number, because 670129 - 2⁵ = 670097 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (670139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335064 + 335065.

It is an arithmetic number, because the mean of its divisors is an integer number (335065).

2⁶⁷⁰¹²⁹ is an apocalyptic number.

It is an amenable number.

670129 is a deficient number, since it is larger than the sum of its proper divisors (1).

670129 is an equidigital number, since it uses as much as digits as its factorization.

670129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 670129 is about 818.6140726863. The cubic root of 670129 is about 87.5090167579.

The spelling of 670129 in words is "six hundred seventy thousand, one hundred twenty-nine".