6670655129 has 2 divisors, whose sum is σ = 6670655130. Its totient is φ = 6670655128.

The previous prime is 6670655111. The next prime is 6670655161. The reversal of 6670655129 is 9215560766.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4535753104 + 2134902025 = 67348^2 + 46205^2 .

It is a cyclic number.

It is not a de Polignac number, because 6670655129 - 2²⁰ = 6669606553 is a prime.

It is not a weakly prime, because it can be changed into another prime (6670655179) 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, 3335327564 + 3335327565.

It is an arithmetic number, because the mean of its divisors is an integer number (3335327565).

Almost surely, 2^6670655129 is an apocalyptic number.

It is an amenable number.

6670655129 is a deficient number, since it is larger than the sum of its proper divisors (1).

6670655129 is an equidigital number, since it uses as much as digits as its factorization.

6670655129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 6670655129 is about 81674.0786847333. The cubic root of 6670655129 is about 1882.4473116133.

The spelling of 6670655129 in words is "six billion, six hundred seventy million, six hundred fifty-five thousand, one hundred twenty-nine".