687334 has 4 divisors (see below), whose sum is σ = 1031004. Its totient is φ = 343666.

The previous prime is 687331. The next prime is 687341. The reversal of 687334 is 433786.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 687296 and 687305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171832 + ... + 171835.

It is an arithmetic number, because the mean of its divisors is an integer number (257751).

2⁶⁸⁷³³⁴ is an apocalyptic number.

687334 is a deficient number, since it is larger than the sum of its proper divisors (343670).

687334 is a wasteful number, since it uses less digits than its factorization.

687334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343669.

The product of its digits is 12096, while the sum is 31.

The square root of 687334 is about 829.0560897792. The cubic root of 687334 is about 88.2516043226.

The spelling of 687334 in words is "six hundred eighty-seven thousand, three hundred thirty-four".