8669706891 has 16 divisors (see below), whose sum is σ = 11640871200. Its totient is φ = 5739222528.

The previous prime is 8669706889. The next prime is 8669706901. The reversal of 8669706891 is 1986079668.

It is not a de Polignac number, because 8669706891 - 2¹ = 8669706889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8669706841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837475 + ... + 847763.

It is an arithmetic number, because the mean of its divisors is an integer number (727554450).

Almost surely, 2^8669706891 is an apocalyptic number.

8669706891 is a deficient number, since it is larger than the sum of its proper divisors (2971164309).

8669706891 is a wasteful number, since it uses less digits than its factorization.

8669706891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12238.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The square root of 8669706891 is about 93111.2608173684. The cubic root of 8669706891 is about 2054.3202082523.

The spelling of 8669706891 in words is "eight billion, six hundred sixty-nine million, seven hundred six thousand, eight hundred ninety-one".