687248 has 10 divisors (see below), whose sum is σ = 1331574. Its totient is φ = 343616.

The previous prime is 687233. The next prime is 687277. The reversal of 687248 is 842786.

It can be written as a sum of positive squares in only one way, i.e., 425104 + 262144 = 652^2 + 512^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21461 + ... + 21492.

2⁶⁸⁷²⁴⁸ is an apocalyptic number.

It is an amenable number.

687248 is a deficient number, since it is larger than the sum of its proper divisors (644326).

687248 is a wasteful number, since it uses less digits than its factorization.

687248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42961 (or 42955 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 687248 is about 829.0042219434. The cubic root of 687248 is about 88.2479234559.

The spelling of 687248 in words is "six hundred eighty-seven thousand, two hundred forty-eight".