688941 has 12 divisors (see below), whose sum is σ = 1085760. Its totient is φ = 417480.

The previous prime is 688939. The next prime is 688951. The reversal of 688941 is 149886.

It is a happy number.

It is not a de Polignac number, because 688941 - 2¹ = 688939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 688896 and 688905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3381 + ... + 3578.

It is an arithmetic number, because the mean of its divisors is an integer number (90480).

2⁶⁸⁸⁹⁴¹ is an apocalyptic number.

It is an amenable number.

688941 is a deficient number, since it is larger than the sum of its proper divisors (396819).

688941 is a wasteful number, since it uses less digits than its factorization.

688941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976 (or 6973 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 688941 is about 830.0246984277. The cubic root of 688941 is about 88.3203287687.

It can be divided in two parts, 68 and 8941, that added together give a palindrome (9009).

The spelling of 688941 in words is "six hundred eighty-eight thousand, nine hundred forty-one".