678441 has 8 divisors (see below), whose sum is σ = 920160. Its totient is φ = 444512.

The previous prime is 678437. The next prime is 678451. The reversal of 678441 is 144876.

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 678441 - 2² = 678437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 678399 and 678408.

It is not an unprimeable number, because it can be changed into a prime (678401) 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, 1740 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (115020).

2⁶⁷⁸⁴⁴¹ is an apocalyptic number.

It is an amenable number.

678441 is a deficient number, since it is larger than the sum of its proper divisors (241719).

678441 is a wasteful number, since it uses less digits than its factorization.

678441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895.

The product of its digits is 5376, while the sum is 30.

The square root of 678441 is about 823.6753001031. The cubic root of 678441 is about 87.8693394963.

The spelling of 678441 in words is "six hundred seventy-eight thousand, four hundred forty-one".