6646486933 has 2 divisors, whose sum is σ = 6646486934. Its totient is φ = 6646486932.

The previous prime is 6646486883. The next prime is 6646486937. The reversal of 6646486933 is 3396846466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6171987844 + 474499089 = 78562^2 + 21783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6646486933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6646486937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323243466 + 3323243467.

It is an arithmetic number, because the mean of its divisors is an integer number (3323243467).

Almost surely, 2^6646486933 is an apocalyptic number.

It is an amenable number.

6646486933 is a deficient number, since it is larger than the sum of its proper divisors (1).

6646486933 is an equidigital number, since it uses as much as digits as its factorization.

6646486933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 55.

The square root of 6646486933 is about 81525.9893101580. The cubic root of 6646486933 is about 1880.1711528388.

The spelling of 6646486933 in words is "six billion, six hundred forty-six million, four hundred eighty-six thousand, nine hundred thirty-three".