8987881697 has 2 divisors, whose sum is σ = 8987881698. Its totient is φ = 8987881696.

The previous prime is 8987881681. The next prime is 8987881711. The reversal of 8987881697 is 7961887898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7539622561 + 1448259136 = 86831^2 + 38056^2 .

It is a cyclic number.

It is not a de Polignac number, because 8987881697 - 2⁴ = 8987881681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8987881697.

It is not a weakly prime, because it can be changed into another prime (8987881607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4493940848 + 4493940849.

It is an arithmetic number, because the mean of its divisors is an integer number (4493940849).

Almost surely, 2^8987881697 is an apocalyptic number.

It is an amenable number.

8987881697 is a deficient number, since it is larger than the sum of its proper divisors (1).

8987881697 is an equidigital number, since it uses as much as digits as its factorization.

8987881697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97542144, while the sum is 71.

The square root of 8987881697 is about 94804.4392262303. The cubic root of 8987881697 is about 2079.1498079371.

The spelling of 8987881697 in words is "eight billion, nine hundred eighty-seven million, eight hundred eighty-one thousand, six hundred ninety-seven".