678835 has 8 divisors (see below), whose sum is σ = 821376. Its totient is φ = 538560.

The previous prime is 678833. The next prime is 678859. The reversal of 678835 is 538876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 678835 - 2¹ = 678833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678794 and 678803.

It is not an unprimeable number, because it can be changed into a prime (678833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (102672).

2⁶⁷⁸⁸³⁵ is an apocalyptic number.

678835 is a deficient number, since it is larger than the sum of its proper divisors (142541).

678835 is a wasteful number, since it uses less digits than its factorization.

678835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133.

The product of its digits is 40320, while the sum is 37.

The square root of 678835 is about 823.9144373052. The cubic root of 678835 is about 87.8863460452.

The spelling of 678835 in words is "six hundred seventy-eight thousand, eight hundred thirty-five".