687395 has 8 divisors (see below), whose sum is σ = 873504. Its totient is φ = 517504.

The previous prime is 687389. The next prime is 687397. The reversal of 687395 is 593786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 687395 - 2⁶ = 687331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3959 + ... + 4128.

It is an arithmetic number, because the mean of its divisors is an integer number (109188).

2⁶⁸⁷³⁹⁵ is an apocalyptic number.

687395 is a deficient number, since it is larger than the sum of its proper divisors (186109).

687395 is a wasteful number, since it uses less digits than its factorization.

687395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109.

The product of its digits is 45360, while the sum is 38.

The square root of 687395 is about 829.0928777887. The cubic root of 687395 is about 88.2542149838.

The spelling of 687395 in words is "six hundred eighty-seven thousand, three hundred ninety-five".