678315 has 16 divisors (see below), whose sum is σ = 1184256. Its totient is φ = 328800.

The previous prime is 678299. The next prime is 678329. The reversal of 678315 is 513876.

It is not a de Polignac number, because 678315 - 2⁴ = 678299 is a prime.

It is a super-2 number, since 2×678315² = 920222478450, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1891 + ... + 2220.

It is an arithmetic number, because the mean of its divisors is an integer number (74016).

2⁶⁷⁸³¹⁵ is an apocalyptic number.

678315 is a deficient number, since it is larger than the sum of its proper divisors (505941).

678315 is a wasteful number, since it uses less digits than its factorization.

678315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4130.

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

The square root of 678315 is about 823.5988101011. The cubic root of 678315 is about 87.8638994643.

The spelling of 678315 in words is "six hundred seventy-eight thousand, three hundred fifteen".