8691074891 has 2 divisors, whose sum is σ = 8691074892. Its totient is φ = 8691074890.

The previous prime is 8691074881. The next prime is 8691074921. The reversal of 8691074891 is 1984701968.

8691074891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8691074891 - 2²⁶ = 8623966027 is a prime.

It is not a weakly prime, because it can be changed into another prime (8691074851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4345537445 + 4345537446.

It is an arithmetic number, because the mean of its divisors is an integer number (4345537446).

Almost surely, 2^8691074891 is an apocalyptic number.

8691074891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8691074891 is an equidigital number, since it uses as much as digits as its factorization.

8691074891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 8691074891 is about 93225.9346480366. The cubic root of 8691074891 is about 2056.0065666789.

The spelling of 8691074891 in words is "eight billion, six hundred ninety-one million, seventy-four thousand, eight hundred ninety-one".