7986663473 has 2 divisors, whose sum is σ = 7986663474. Its totient is φ = 7986663472.

The previous prime is 7986663467. The next prime is 7986663533. The reversal of 7986663473 is 3743666897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4096896049 + 3889767424 = 64007^2 + 62368^2 .

It is a cyclic number.

It is not a de Polignac number, because 7986663473 - 2⁶ = 7986663409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7986663403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3993331736 + 3993331737.

It is an arithmetic number, because the mean of its divisors is an integer number (3993331737).

Almost surely, 2^7986663473 is an apocalyptic number.

It is an amenable number.

7986663473 is a deficient number, since it is larger than the sum of its proper divisors (1).

7986663473 is an equidigital number, since it uses as much as digits as its factorization.

7986663473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27433728, while the sum is 59.

The square root of 7986663473 is about 89368.1345502971. The cubic root of 7986663473 is about 1998.8880045977. Note that the first 3 decimals are identical.

The spelling of 7986663473 in words is "seven billion, nine hundred eighty-six million, six hundred sixty-three thousand, four hundred seventy-three".