688862 has 8 divisors (see below), whose sum is σ = 1040592. Its totient is φ = 342000.

The previous prime is 688861. The next prime is 688867. The reversal of 688862 is 268886.

688862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (130074).

2⁶⁸⁸⁸⁶² is an apocalyptic number.

688862 is a deficient number, since it is larger than the sum of its proper divisors (351730).

688862 is a wasteful number, since it uses less digits than its factorization.

688862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434.

The product of its digits is 36864, while the sum is 38.

The square root of 688862 is about 829.9771081180. The cubic root of 688862 is about 88.3169527792.

Adding to 688862 its sum of digits (38), we get a square (688900 = 830²).

The spelling of 688862 in words is "six hundred eighty-eight thousand, eight hundred sixty-two".