678352 has 10 divisors (see below), whose sum is σ = 1314338. Its totient is φ = 339168.

The previous prime is 678343. The next prime is 678367. The reversal of 678352 is 253876.

It can be written as a sum of positive squares in only one way, i.e., 602176 + 76176 = 776^2 + 276^2 .

It is a super-2 number, since 2×678352² = 920322871808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

678352 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, 21183 + ... + 21214.

2⁶⁷⁸³⁵² is an apocalyptic number.

It is an amenable number.

678352 is a deficient number, since it is larger than the sum of its proper divisors (635986).

678352 is a wasteful number, since it uses less digits than its factorization.

678352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42405 (or 42399 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 678352 is about 823.6212721876. The cubic root of 678352 is about 87.8654970039.

The spelling of 678352 in words is "six hundred seventy-eight thousand, three hundred fifty-two".