8712971633 has 2 divisors, whose sum is σ = 8712971634. Its totient is φ = 8712971632.

The previous prime is 8712971629. The next prime is 8712971647. The reversal of 8712971633 is 3361792178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8636356624 + 76615009 = 92932^2 + 8753^2 .

It is a cyclic number.

It is not a de Polignac number, because 8712971633 - 2² = 8712971629 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 (8712971653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4356485816 + 4356485817.

It is an arithmetic number, because the mean of its divisors is an integer number (4356485817).

Almost surely, 2^8712971633 is an apocalyptic number.

It is an amenable number.

8712971633 is a deficient number, since it is larger than the sum of its proper divisors (1).

8712971633 is an equidigital number, since it uses as much as digits as its factorization.

8712971633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 8712971633 is about 93343.2998827447. The cubic root of 8712971633 is about 2057.7317882538.

The spelling of 8712971633 in words is "eight billion, seven hundred twelve million, nine hundred seventy-one thousand, six hundred thirty-three".