880640 has 52 divisors (see below), whose sum is σ = 2162424. Its totient is φ = 344064.

The previous prime is 880603. The next prime is 880661. The reversal of 880640 is 46088.

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 880640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20459 + ... + 20501.

2⁸⁸⁰⁶⁴⁰ is an apocalyptic number.

880640 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 880640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081212).

880640 is an abundant number, since it is smaller than the sum of its proper divisors (1281784).

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

880640 is an equidigital number, since it uses as much as digits as its factorization.

880640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 50 counting only the distinct ones).

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

The square root of 880640 is about 938.4242111114. The cubic root of 880640 is about 95.8516226383.

The spelling of 880640 in words is "eight hundred eighty thousand, six hundred forty".