678701 has 4 divisors (see below), whose sum is σ = 685152. Its totient is φ = 672252.

The previous prime is 678659. The next prime is 678719. The reversal of 678701 is 107876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 678701 - 2⁶ = 678637 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678701.

It is not an unprimeable number, because it can be changed into a prime (678721) 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 3 ways as a sum of consecutive naturals, for example, 3065 + ... + 3278.

It is an arithmetic number, because the mean of its divisors is an integer number (171288).

2⁶⁷⁸⁷⁰¹ is an apocalyptic number.

It is an amenable number.

678701 is a deficient number, since it is larger than the sum of its proper divisors (6451).

678701 is a wasteful number, since it uses less digits than its factorization.

678701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 678701 is about 823.8331141682. The cubic root of 678701 is about 87.8805628306.

The spelling of 678701 in words is "six hundred seventy-eight thousand, seven hundred one".