678714 has 32 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 211200.

The previous prime is 678659. The next prime is 678719. The reversal of 678714 is 417876.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678714.

It is not an unprimeable number, because it can be changed into a prime (678719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7582 + ... + 7670.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁶⁷⁸⁷¹⁴ is an apocalyptic number.

678714 is an abundant number, since it is smaller than the sum of its proper divisors (772806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678714 is a wasteful number, since it uses less digits than its factorization.

678714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its digits is 9408, while the sum is 33.

The square root of 678714 is about 823.8410040778. The cubic root of 678714 is about 87.8811239221.

The spelling of 678714 in words is "six hundred seventy-eight thousand, seven hundred fourteen".