678007 has 4 divisors (see below), whose sum is σ = 739656. Its totient is φ = 616360.

The previous prime is 677983. The next prime is 678023. The reversal of 678007 is 700876.

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

It is a cyclic number.

It is not a de Polignac number, because 678007 - 2¹¹ = 675959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678037) 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, 30808 + ... + 30829.

It is an arithmetic number, because the mean of its divisors is an integer number (184914).

2⁶⁷⁸⁰⁰⁷ is an apocalyptic number.

678007 is a deficient number, since it is larger than the sum of its proper divisors (61649).

678007 is a wasteful number, since it uses less digits than its factorization.

678007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61648.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 678007 is about 823.4118046276. The cubic root of 678007 is about 87.8505987716.

The spelling of 678007 in words is "six hundred seventy-eight thousand, seven".