6006635021 has 2 divisors, whose sum is σ = 6006635022. Its totient is φ = 6006635020.

The previous prime is 6006634993. The next prime is 6006635123. The reversal of 6006635021 is 1205366006.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5991534025 + 15100996 = 77405^2 + 3886^2 .

It is a cyclic number.

It is not a de Polignac number, because 6006635021 - 2⁶ = 6006634957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6006635521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3003317510 + 3003317511.

It is an arithmetic number, because the mean of its divisors is an integer number (3003317511).

Almost surely, 2^6006635021 is an apocalyptic number.

It is an amenable number.

6006635021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6006635021 is an equidigital number, since it uses as much as digits as its factorization.

6006635021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 6006635021 is about 77502.4839666446. The cubic root of 6006635021 is about 1817.7901590432.

The spelling of 6006635021 in words is "six billion, six million, six hundred thirty-five thousand, twenty-one".