678252 has 24 divisors (see below), whose sum is σ = 1638000. Its totient is φ = 218176.

The previous prime is 678229. The next prime is 678253. The reversal of 678252 is 252876.

678252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (678253) by changing a digit.

678252 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 7 ways as a sum of consecutive naturals, for example, 627 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (68250).

2⁶⁷⁸²⁵² is an apocalyptic number.

It is an amenable number.

678252 is an abundant number, since it is smaller than the sum of its proper divisors (959748).

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

678252 is a wasteful number, since it uses less digits than its factorization.

678252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1983 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 678252 is about 823.5605624361. The cubic root of 678252 is about 87.8611791957.

The spelling of 678252 in words is "six hundred seventy-eight thousand, two hundred fifty-two".