688852 has 6 divisors (see below), whose sum is σ = 1205498. Its totient is φ = 344424.

The previous prime is 688813. The next prime is 688861. The reversal of 688852 is 258886.

It can be written as a sum of positive squares in only one way, i.e., 646416 + 42436 = 804^2 + 206^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86103 + ... + 86110.

2⁶⁸⁸⁸⁵² is an apocalyptic number.

It is an amenable number.

688852 is a deficient number, since it is larger than the sum of its proper divisors (516646).

688852 is a wasteful number, since it uses less digits than its factorization.

688852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172217 (or 172215 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 688852 is about 829.9710838336. The cubic root of 688852 is about 88.3165254204.

It can be divided in two parts, 688 and 852, that added together give a triangular number (1540 = T₅₅).

The spelling of 688852 in words is "six hundred eighty-eight thousand, eight hundred fifty-two".