670828 has 12 divisors (see below), whose sum is σ = 1214640. Its totient is φ = 323792.

The previous prime is 670823. The next prime is 670849. The reversal of 670828 is 828076.

670828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 670828.

It is not an unprimeable number, because it can be changed into a prime (670823) by changing a digit.

670828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2776 + ... + 3007.

It is an arithmetic number, because the mean of its divisors is an integer number (101220).

2⁶⁷⁰⁸²⁸ is an apocalyptic number.

It is an amenable number.

670828 is a deficient number, since it is larger than the sum of its proper divisors (543812).

670828 is a wasteful number, since it uses less digits than its factorization.

670828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 670828 is about 819.0409025195. The cubic root of 670828 is about 87.5394325669.

The spelling of 670828 in words is "six hundred seventy thousand, eight hundred twenty-eight".