8689091670 has 128 divisors (see below), whose sum is σ = 26559360000. Its totient is φ = 1980205056.

The previous prime is 8689091659. The next prime is 8689091701. The reversal of 8689091670 is 761909868.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 649206 + ... + 662454.

It is an arithmetic number, because the mean of its divisors is an integer number (207495000).

Almost surely, 2^8689091670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8689091670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13279680000).

8689091670 is an abundant number, since it is smaller than the sum of its proper divisors (17870268330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8689091670 is a wasteful number, since it uses less digits than its factorization.

8689091670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13619 (or 13613 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 8689091670 is about 93215.2974033769. The cubic root of 8689091670 is about 2055.8501677048.

The spelling of 8689091670 in words is "eight billion, six hundred eighty-nine million, ninety-one thousand, six hundred seventy".