670678 has 8 divisors (see below), whose sum is σ = 1030680. Its totient is φ = 327120.

The previous prime is 670673. The next prime is 670693. The reversal of 670678 is 876076.

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

It is a super-4 number, since 4×670678⁴ (a number of 24 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4008 + ... + 4171.

It is an arithmetic number, because the mean of its divisors is an integer number (128835).

2⁶⁷⁰⁶⁷⁸ is an apocalyptic number.

670678 is a deficient number, since it is larger than the sum of its proper divisors (360002).

670678 is a wasteful number, since it uses less digits than its factorization.

670678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8222.

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

The square root of 670678 is about 818.9493268817. The cubic root of 670678 is about 87.5329073504.

The spelling of 670678 in words is "six hundred seventy thousand, six hundred seventy-eight".