1000688 has 40 divisors (see below), whose sum is σ = 2218608. Its totient is φ = 433152.

The previous prime is 1000679. The next prime is 1000691. The reversal of 1000688 is 8860001.

1000688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3395 + ... + 3677.

2^1000688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1109304).

1000688 is an abundant number, since it is smaller than the sum of its proper divisors (1217920).

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

1000688 is a wasteful number, since it uses less digits than its factorization.

1000688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1000688 is about 1000.3439408523. The cubic root of 1000688 is about 100.0229280760.

Adding to 1000688 its reverse (8860001), we get a palindrome (9860689).

The spelling of 1000688 in words is "one million, six hundred eighty-eight", and thus it is an aban number.