678112 has 12 divisors (see below), whose sum is σ = 1335096. Its totient is φ = 339040.

The previous prime is 678103. The next prime is 678133. The reversal of 678112 is 211876.

It is a congruent number.

It is an unprimeable number.

678112 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 as a sum of consecutive naturals, namely, 10564 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (111258).

2⁶⁷⁸¹¹² is an apocalyptic number.

It is an amenable number.

678112 is a deficient number, since it is larger than the sum of its proper divisors (656984).

678112 is a wasteful number, since it uses less digits than its factorization.

678112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21201 (or 21193 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 678112 is about 823.4755612646. The cubic root of 678112 is about 87.8551335511.

Adding to 678112 its reverse (211876), we get a palindrome (889988).

The spelling of 678112 in words is "six hundred seventy-eight thousand, one hundred twelve".