7993284661 has 2 divisors, whose sum is σ = 7993284662. Its totient is φ = 7993284660.

The previous prime is 7993284619. The next prime is 7993284671. The reversal of 7993284661 is 1664823997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4080782161 + 3912502500 = 63881^2 + 62550^2 .

It is an emirp because it is prime and its reverse (1664823997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7993284661 - 2¹³ = 7993276469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7993284671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3996642330 + 3996642331.

It is an arithmetic number, because the mean of its divisors is an integer number (3996642331).

Almost surely, 2^7993284661 is an apocalyptic number.

It is an amenable number.

7993284661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7993284661 is an equidigital number, since it uses as much as digits as its factorization.

7993284661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 55.

The square root of 7993284661 is about 89405.1713325353. The cubic root of 7993284661 is about 1999.4402317610.

The spelling of 7993284661 in words is "seven billion, nine hundred ninety-three million, two hundred eighty-four thousand, six hundred sixty-one".