678270 has 32 divisors (see below), whose sum is σ = 1700352. Its totient is φ = 172832.

The previous prime is 678253. The next prime is 678289. The reversal of 678270 is 72876.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

678270 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, 199 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (53136).

2⁶⁷⁸²⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850176).

678270 is an abundant number, since it is smaller than the sum of its proper divisors (1022082).

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

678270 is a wasteful number, since it uses less digits than its factorization.

678270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 678270 is about 823.5714905216. The cubic root of 678270 is about 87.8619564325.

The spelling of 678270 in words is "six hundred seventy-eight thousand, two hundred seventy".