687007 has 2 divisors, whose sum is σ = 687008. Its totient is φ = 687006.

The previous prime is 686993. The next prime is 687013. The reversal of 687007 is 700786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687007 - 2⁷ = 686879 is a prime.

It is a Chen prime.

687007 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343503 + 343504.

It is an arithmetic number, because the mean of its divisors is an integer number (343504).

2⁶⁸⁷⁰⁰⁷ is an apocalyptic number.

687007 is a deficient number, since it is larger than the sum of its proper divisors (1).

687007 is an equidigital number, since it uses as much as digits as its factorization.

687007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 687007 is about 828.8588540880. The cubic root of 687007 is about 88.2376068326.

The spelling of 687007 in words is "six hundred eighty-seven thousand, seven".