6691024429 has 2 divisors, whose sum is σ = 6691024430. Its totient is φ = 6691024428.

The previous prime is 6691024423. The next prime is 6691024489. The reversal of 6691024429 is 9244201966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4559355529 + 2131668900 = 67523^2 + 46170^2 .

It is a cyclic number.

It is not a de Polignac number, because 6691024429 - 2³ = 6691024421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6691024421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345512214 + 3345512215.

It is an arithmetic number, because the mean of its divisors is an integer number (3345512215).

Almost surely, 2^6691024429 is an apocalyptic number.

It is an amenable number.

6691024429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6691024429 is an equidigital number, since it uses as much as digits as its factorization.

6691024429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 6691024429 is about 81798.6823182379. The cubic root of 6691024429 is about 1884.3614250224.

The spelling of 6691024429 in words is "six billion, six hundred ninety-one million, twenty-four thousand, four hundred twenty-nine".