678146 has 16 divisors (see below), whose sum is σ = 1183680. Its totient is φ = 285360.

The previous prime is 678133. The next prime is 678157. The reversal of 678146 is 641876.

678146 is nontrivially palindromic in base 6.

It is a super-6 number, since 6×678146⁶ (a number of 36 digits) contains 666666 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678146.

It is an unprimeable number.

678146 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (73980).

2⁶⁷⁸¹⁴⁶ is an apocalyptic number.

678146 is a deficient number, since it is larger than the sum of its proper divisors (505534).

678146 is a wasteful number, since it uses less digits than its factorization.

678146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889.

The product of its digits is 8064, while the sum is 32.

The square root of 678146 is about 823.4962052129. The cubic root of 678146 is about 87.8566018556.

The spelling of 678146 in words is "six hundred seventy-eight thousand, one hundred forty-six".