685378 has 8 divisors (see below), whose sum is σ = 1032768. Its totient is φ = 341124.

The previous prime is 685369. The next prime is 685381. The reversal of 685378 is 873586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (129096).

2⁶⁸⁵³⁷⁸ is an apocalyptic number.

685378 is a deficient number, since it is larger than the sum of its proper divisors (347390).

685378 is a wasteful number, since it uses less digits than its factorization.

685378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its digits is 40320, while the sum is 37.

The square root of 685378 is about 827.8755945189. The cubic root of 685378 is about 88.1678099598.

The spelling of 685378 in words is "six hundred eighty-five thousand, three hundred seventy-eight".