8165680 has 20 divisors (see below), whose sum is σ = 18985392. Its totient is φ = 3266240.

The previous prime is 8165671. The next prime is 8165681. The reversal of 8165680 is 865618.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (8165681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50956 + ... + 51115.

Almost surely, 2^8165680 is an apocalyptic number.

8165680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8165680 is an abundant number, since it is smaller than the sum of its proper divisors (10819712).

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

8165680 is a wasteful number, since it uses less digits than its factorization.

8165680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102084 (or 102078 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8165680 is about 2857.5653973269. The cubic root of 8165680 is about 201.3712436348.

The spelling of 8165680 in words is "eight million, one hundred sixty-five thousand, six hundred eighty".