6666750029 has 2 divisors, whose sum is σ = 6666750030. Its totient is φ = 6666750028.

The previous prime is 6666749993. The next prime is 6666750037. The reversal of 6666750029 is 9200576666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6096017929 + 570732100 = 78077^2 + 23890^2 .

It is a cyclic number.

It is not a de Polignac number, because 6666750029 - 2³² = 2371782733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6666750049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333375014 + 3333375015.

It is an arithmetic number, because the mean of its divisors is an integer number (3333375015).

Almost surely, 2^6666750029 is an apocalyptic number.

It is an amenable number.

6666750029 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666750029 is an equidigital number, since it uses as much as digits as its factorization.

6666750029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 6666750029 is about 81650.1685791279. The cubic root of 6666750029 is about 1882.0799024253.

The spelling of 6666750029 in words is "six billion, six hundred sixty-six million, seven hundred fifty thousand, twenty-nine".