678670 has 8 divisors (see below), whose sum is σ = 1221624. Its totient is φ = 271464.

The previous prime is 678659. The next prime is 678719. The reversal of 678670 is 76876.

678670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33924 + ... + 33943.

It is an arithmetic number, because the mean of its divisors is an integer number (152703).

2⁶⁷⁸⁶⁷⁰ is an apocalyptic number.

678670 is a deficient number, since it is larger than the sum of its proper divisors (542954).

678670 is a wasteful number, since it uses less digits than its factorization.

678670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67874.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 678670 is about 823.8142994632. The cubic root of 678670 is about 87.8792248144.

The spelling of 678670 in words is "six hundred seventy-eight thousand, six hundred seventy".