808640 has 84 divisors (see below), whose sum is σ = 2322576. Its totient is φ = 262656.

The previous prime is 808637. The next prime is 808651. The reversal of 808640 is 46808.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42551 + ... + 42569.

2⁸⁰⁸⁶⁴⁰ is an apocalyptic number.

808640 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 808640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161288).

808640 is an abundant number, since it is smaller than the sum of its proper divisors (1513936).

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

808640 is a wasteful number, since it uses less digits than its factorization.

808640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 808640 is about 899.2441270311. The cubic root of 808640 is about 93.1647751355.

The spelling of 808640 in words is "eight hundred eight thousand, six hundred forty".