678046 has 4 divisors (see below), whose sum is σ = 1017072. Its totient is φ = 339022.

The previous prime is 678037. The next prime is 678047. The reversal of 678046 is 640876.

678046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 677999 and 678017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169510 + ... + 169513.

It is an arithmetic number, because the mean of its divisors is an integer number (254268).

2⁶⁷⁸⁰⁴⁶ is an apocalyptic number.

678046 is a deficient number, since it is larger than the sum of its proper divisors (339026).

678046 is a wasteful number, since it uses less digits than its factorization.

678046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339025.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 678046 is about 823.4354862404. The cubic root of 678046 is about 87.8522831730.

The spelling of 678046 in words is "six hundred seventy-eight thousand, forty-six".