8314640 has 60 divisors (see below), whose sum is σ = 20235684. Its totient is φ = 3174912.

The previous prime is 8314613. The next prime is 8314643. The reversal of 8314640 is 464138.

It can be written as a sum of positive squares in 6 ways, for example, as 1175056 + 7139584 = 1084^2 + 2672^2 .

It is not an unprimeable number, because it can be changed into a prime (8314643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156854 + ... + 156906.

Almost surely, 2^8314640 is an apocalyptic number.

8314640 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 8314640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10117842).

8314640 is an abundant number, since it is smaller than the sum of its proper divisors (11921044).

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

8314640 is a wasteful number, since it uses less digits than its factorization.

8314640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 8314640 is about 2883.5117478519. The cubic root of 8314640 is about 202.5883575189.

Adding to 8314640 its reverse (464138), we get a palindrome (8778778).

The spelling of 8314640 in words is "eight million, three hundred fourteen thousand, six hundred forty".