813678 has 8 divisors (see below), whose sum is σ = 1627368. Its totient is φ = 271224.

The previous prime is 813677. The next prime is 813697. The reversal of 813678 is 876318.

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

813678 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67801 + ... + 67812.

It is an arithmetic number, because the mean of its divisors is an integer number (203421).

2⁸¹³⁶⁷⁸ is an apocalyptic number.

813678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

813678 is a wasteful number, since it uses less digits than its factorization.

813678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135618.

The product of its digits is 8064, while the sum is 33.

The square root of 813678 is about 902.0410190230. The cubic root of 813678 is about 93.3578535349.

The spelling of 813678 in words is "eight hundred thirteen thousand, six hundred seventy-eight".