678135 has 16 divisors (see below), whose sum is σ = 1106784. Its totient is φ = 354432.

The previous prime is 678133. The next prime is 678157. The reversal of 678135 is 531876.

It is not a de Polignac number, because 678135 - 2¹ = 678133 is a prime.

678135 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (69174).

2⁶⁷⁸¹³⁵ is an apocalyptic number.

678135 is a deficient number, since it is larger than the sum of its proper divisors (428649).

678135 is a wasteful number, since it uses less digits than its factorization.

678135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914.

The product of its digits is 5040, while the sum is 30.

The square root of 678135 is about 823.4895263451. The cubic root of 678135 is about 87.8561268213.

The spelling of 678135 in words is "six hundred seventy-eight thousand, one hundred thirty-five".