6393100661 has 2 divisors, whose sum is σ = 6393100662. Its totient is φ = 6393100660.

The previous prime is 6393100577. The next prime is 6393100691. The reversal of 6393100661 is 1660013936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3624762436 + 2768338225 = 60206^2 + 52615^2 .

It is a cyclic number.

It is not a de Polignac number, because 6393100661 - 2²⁶ = 6325991797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6393100691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3196550330 + 3196550331.

It is an arithmetic number, because the mean of its divisors is an integer number (3196550331).

Almost surely, 2^6393100661 is an apocalyptic number.

It is an amenable number.

6393100661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6393100661 is an equidigital number, since it uses as much as digits as its factorization.

6393100661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 6393100661 is about 79956.8675036735. The cubic root of 6393100661 is about 1855.9681290859.

The spelling of 6393100661 in words is "six billion, three hundred ninety-three million, one hundred thousand, six hundred sixty-one".