678313 has 4 divisors (see below), whose sum is σ = 681088. Its totient is φ = 675540.

The previous prime is 678299. The next prime is 678329. The reversal of 678313 is 313876.

678313 is nontrivially palindromic in base 9.

678313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 678313 - 2¹⁷ = 547241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678343) 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, 981 + ... + 1522.

It is an arithmetic number, because the mean of its divisors is an integer number (170272).

2⁶⁷⁸³¹³ is an apocalyptic number.

It is an amenable number.

678313 is a deficient number, since it is larger than the sum of its proper divisors (2775).

678313 is a wasteful number, since it uses less digits than its factorization.

678313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774.

The product of its digits is 3024, while the sum is 28.

The square root of 678313 is about 823.5975959168. The cubic root of 678313 is about 87.8638131092.

The spelling of 678313 in words is "six hundred seventy-eight thousand, three hundred thirteen".