678298343 has 8 divisors (see below), whose sum is σ = 681154320. Its totient is φ = 675449280.

The previous prime is 678298289. The next prime is 678298349. The reversal of 678298343 is 343892876.

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

It is a cyclic number.

It is not a de Polignac number, because 678298343 - 2¹⁴ = 678281959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678298291 and 678298300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678298349) 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, 284171 + ... + 286547.

It is an arithmetic number, because the mean of its divisors is an integer number (85144290).

Almost surely, 2^678298343 is an apocalyptic number.

678298343 is a deficient number, since it is larger than the sum of its proper divisors (2855977).

678298343 is a wasteful number, since it uses less digits than its factorization.

678298343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457.

The product of its digits is 1741824, while the sum is 50.

The square root of 678298343 is about 26044.1613994385. The cubic root of 678298343 is about 878.6318025031.

The spelling of 678298343 in words is "six hundred seventy-eight million, two hundred ninety-eight thousand, three hundred forty-three".