886640 has 20 divisors (see below), whose sum is σ = 2061624. Its totient is φ = 354624.

The previous prime is 886619. The next prime is 886643. The reversal of 886640 is 46688.

886640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×886640² = 1572260979200, which contains 22 as substring.

It is a nialpdrome in base 10 and base 16.

It is a junction number, because it is equal to n+sod(n) for n = 886597 and 886606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (886643) by changing a digit.

886640 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5462 + ... + 5621.

2⁸⁸⁶⁶⁴⁰ is an apocalyptic number.

886640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

886640 is an abundant number, since it is smaller than the sum of its proper divisors (1174984).

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

886640 is a wasteful number, since it uses less digits than its factorization.

886640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11096 (or 11090 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 886640 is about 941.6156328354. The cubic root of 886640 is about 96.0688163988.

The spelling of 886640 in words is "eight hundred eighty-six thousand, six hundred forty".