8451680 has 48 divisors (see below), whose sum is σ = 20203344. Its totient is φ = 3340800.

The previous prime is 8451659. The next prime is 8451683. The reversal of 8451680 is 861548.

8451680 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8451683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15899 + ... + 16421.

It is an arithmetic number, because the mean of its divisors is an integer number (420903).

Almost surely, 2^8451680 is an apocalyptic number.

8451680 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 8451680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10101672).

8451680 is an abundant number, since it is smaller than the sum of its proper divisors (11751664).

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

8451680 is a wasteful number, since it uses less digits than its factorization.

8451680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 8451680 is about 2907.1773251730. The cubic root of 8451680 is about 203.6953031695.

The spelling of 8451680 in words is "eight million, four hundred fifty-one thousand, six hundred eighty".