678433 has 8 divisors (see below), whose sum is σ = 816320. Its totient is φ = 550800.

The previous prime is 678421. The next prime is 678437. The reversal of 678433 is 334876.

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 678433 - 2⁵ = 678401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678395 and 678404.

It is not an unprimeable number, because it can be changed into a prime (678437) 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, 2418 + ... + 2683.

It is an arithmetic number, because the mean of its divisors is an integer number (102040).

2⁶⁷⁸⁴³³ is an apocalyptic number.

It is an amenable number.

678433 is a deficient number, since it is larger than the sum of its proper divisors (137887).

678433 is a wasteful number, since it uses less digits than its factorization.

678433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127.

The product of its digits is 12096, while the sum is 31.

The square root of 678433 is about 823.6704438063. The cubic root of 678433 is about 87.8689941175.

It can be divided in two parts, 678 and 433, that added together give a palindrome (1111).

The spelling of 678433 in words is "six hundred seventy-eight thousand, four hundred thirty-three".