8431668 has 96 divisors (see below), whose sum is σ = 26342400. Its totient is φ = 2278368.

The previous prime is 8431667. The next prime is 8431673. The reversal of 8431668 is 8661348.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8431667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14071 + ... + 14657.

It is an arithmetic number, because the mean of its divisors is an integer number (274400).

Almost surely, 2^8431668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8431668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13171200).

8431668 is an abundant number, since it is smaller than the sum of its proper divisors (17910732).

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

8431668 is a wasteful number, since it uses less digits than its factorization.

8431668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 618 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8431668 is about 2903.7334588423. The cubic root of 8431668 is about 203.5344052971.

The spelling of 8431668 in words is "eight million, four hundred thirty-one thousand, six hundred sixty-eight".