687064 has 16 divisors (see below), whose sum is σ = 1472400. Its totient is φ = 294432.

The previous prime is 687061. The next prime is 687073. The reversal of 687064 is 460786.

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 687064.

It is not an unprimeable number, because it can be changed into a prime (687061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6079 + ... + 6190.

It is an arithmetic number, because the mean of its divisors is an integer number (92025).

2⁶⁸⁷⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

687064 is an abundant number, since it is smaller than the sum of its proper divisors (785336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687064 is a wasteful number, since it uses less digits than its factorization.

687064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12282 (or 12278 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 687064 is about 828.8932379987. The cubic root of 687064 is about 88.2400470817.

The spelling of 687064 in words is "six hundred eighty-seven thousand, sixty-four".