688948 has 12 divisors (see below), whose sum is σ = 1298500. Its totient is φ = 317952.

The previous prime is 688939. The next prime is 688951. The reversal of 688948 is 849886.

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 550564 = 372^2 + 742^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6573 + ... + 6676.

2⁶⁸⁸⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

688948 is a deficient number, since it is larger than the sum of its proper divisors (609552).

688948 is a wasteful number, since it uses less digits than its factorization.

688948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13266 (or 13264 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 688948 is about 830.0289151590. The cubic root of 688948 is about 88.3206278945.

The spelling of 688948 in words is "six hundred eighty-eight thousand, nine hundred forty-eight".