8551680 has 144 divisors (see below), whose sum is σ = 29139264. Its totient is φ = 2129920.

The previous prime is 8551667. The next prime is 8551687. The reversal of 8551680 is 861558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8551687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65215 + ... + 65345.

It is an arithmetic number, because the mean of its divisors is an integer number (202356).

Almost surely, 2^8551680 is an apocalyptic number.

8551680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8551680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14569632).

8551680 is an abundant number, since it is smaller than the sum of its proper divisors (20587584).

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

8551680 is a wasteful number, since it uses less digits than its factorization.

8551680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 8551680 is about 2924.3255632710. The cubic root of 8551680 is about 204.4955273879.

The spelling of 8551680 in words is "eight million, five hundred fifty-one thousand, six hundred eighty".