687575 has 12 divisors (see below), whose sum is σ = 974640. Its totient is φ = 471360.

The previous prime is 687559. The next prime is 687581. The reversal of 687575 is 575786.

It is not a de Polignac number, because 687575 - 2⁴ = 687559 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 687575.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1790 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (81220).

2⁶⁸⁷⁵⁷⁵ is an apocalyptic number.

687575 is a deficient number, since it is larger than the sum of its proper divisors (287065).

687575 is a wasteful number, since it uses less digits than its factorization.

687575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946 (or 3941 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 687575 is about 829.2014230571. The cubic root of 687575 is about 88.2619176740.

The spelling of 687575 in words is "six hundred eighty-seven thousand, five hundred seventy-five".