8640318 has 64 divisors (see below), whose sum is σ = 19906560. Its totient is φ = 2483712.

The previous prime is 8640287. The next prime is 8640329. The reversal of 8640318 is 8130468.

It is a happy number.

It is a super-2 number, since 2×8640318² = 149310190282248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67971 + ... + 68097.

It is an arithmetic number, because the mean of its divisors is an integer number (311040).

Almost surely, 2^8640318 is an apocalyptic number.

8640318 is an abundant number, since it is smaller than the sum of its proper divisors (11266242).

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

8640318 is a wasteful number, since it uses less digits than its factorization.

8640318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 8640318 is about 2939.4417837406. The cubic root of 8640318 is about 205.1996310349.

It can be divided in two parts, 86 and 40318, that added together give a palindrome (40404).

The spelling of 8640318 in words is "eight million, six hundred forty thousand, three hundred eighteen".