670859 has 6 divisors (see below), whose sum is σ = 780444. Its totient is φ = 574980.

The previous prime is 670853. The next prime is 670867. The reversal of 670859 is 958076.

670859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 670859 - 2¹⁶ = 605323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6797 + ... + 6894.

It is an arithmetic number, because the mean of its divisors is an integer number (130074).

2⁶⁷⁰⁸⁵⁹ is an apocalyptic number.

670859 is a deficient number, since it is larger than the sum of its proper divisors (109585).

670859 is a wasteful number, since it uses less digits than its factorization.

670859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13705 (or 13698 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 670859 is about 819.0598268747. The cubic root of 670859 is about 87.5407809903.

The spelling of 670859 in words is "six hundred seventy thousand, eight hundred fifty-nine".