688746 has 16 divisors (see below), whose sum is σ = 1387008. Its totient is φ = 228000.

The previous prime is 688741. The next prime is 688747. The reversal of 688746 is 647886.

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 688746.

It is not an unprimeable number, because it can be changed into a prime (688741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846 + ... + 1446.

It is an arithmetic number, because the mean of its divisors is an integer number (86688).

2⁶⁸⁸⁷⁴⁶ is an apocalyptic number.

688746 is an abundant number, since it is smaller than the sum of its proper divisors (698262).

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

688746 is a wasteful number, since it uses less digits than its factorization.

688746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797.

The product of its digits is 64512, while the sum is 39.

The square root of 688746 is about 829.9072237305. The cubic root of 688746 is about 88.3119951623.

The spelling of 688746 in words is "six hundred eighty-eight thousand, seven hundred forty-six".