687025 has 6 divisors (see below), whose sum is σ = 851942. Its totient is φ = 549600.

The previous prime is 687023. The next prime is 687031. The reversal of 687025 is 520786.

It can be written as a sum of positive squares in 3 ways, for example, as 185761 + 501264 = 431^2 + 708^2 .

It is not a de Polignac number, because 687025 - 2¹ = 687023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 686984 and 687002.

It is not an unprimeable number, because it can be changed into a prime (687023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13716 + ... + 13765.

2⁶⁸⁷⁰²⁵ is an apocalyptic number.

It is an amenable number.

687025 is a deficient number, since it is larger than the sum of its proper divisors (164917).

687025 is a wasteful number, since it uses less digits than its factorization.

687025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27491 (or 27486 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 687025 is about 828.8697123191. The cubic root of 687025 is about 88.2383774522.

The spelling of 687025 in words is "six hundred eighty-seven thousand, twenty-five".