687375 has 48 divisors (see below), whose sum is σ = 1362816. Its totient is φ = 331200.

The previous prime is 687359. The next prime is 687383. The reversal of 687375 is 573786.

It is not a de Polignac number, because 687375 - 2⁴ = 687359 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 687375.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14602 + ... + 14648.

It is an arithmetic number, because the mean of its divisors is an integer number (28392).

2⁶⁸⁷³⁷⁵ is an apocalyptic number.

687375 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

687375 is a deficient number, since it is larger than the sum of its proper divisors (675441).

687375 is a wasteful number, since it uses less digits than its factorization.

687375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 68 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 687375 is about 829.0808163261. The cubic root of 687375 is about 88.2533590463.

The spelling of 687375 in words is "six hundred eighty-seven thousand, three hundred seventy-five".