678470 has 32 divisors (see below), whose sum is σ = 1397088. Its totient is φ = 235008.

The previous prime is 678463. The next prime is 678479. The reversal of 678470 is 74876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678479) by changing a digit.

678470 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2057 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (43659).

2⁶⁷⁸⁴⁷⁰ is an apocalyptic number.

678470 is an abundant number, since it is smaller than the sum of its proper divisors (718618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678470 is a wasteful number, since it uses less digits than its factorization.

678470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 678470 is about 823.6929039393. The cubic root of 678470 is about 87.8705914718.

The spelling of 678470 in words is "six hundred seventy-eight thousand, four hundred seventy".