687701 has 8 divisors (see below), whose sum is σ = 832320. Its totient is φ = 554688.

The previous prime is 687691. The next prime is 687707. The reversal of 687701 is 107786.

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 687701 - 2⁶ = 687637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771 + ... + 3008.

It is an arithmetic number, because the mean of its divisors is an integer number (104040).

2⁶⁸⁷⁷⁰¹ is an apocalyptic number.

It is an amenable number.

687701 is a deficient number, since it is larger than the sum of its proper divisors (144619).

687701 is a wasteful number, since it uses less digits than its factorization.

687701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 687701 is about 829.2773962915. The cubic root of 687701 is about 88.2673087574.

The spelling of 687701 in words is "six hundred eighty-seven thousand, seven hundred one".