670005 has 32 divisors (see below), whose sum is σ = 1363200. Its totient is φ = 305856.

The previous prime is 670001. The next prime is 670031. The reversal of 670005 is 500076.

670005 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 670005 - 2² = 670001 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 670005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 591 + ... + 1299.

It is an arithmetic number, because the mean of its divisors is an integer number (42600).

2⁶⁷⁰⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

670005 is an abundant number, since it is smaller than the sum of its proper divisors (693195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670005 is a wasteful number, since it uses less digits than its factorization.

670005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 670005 is about 818.5383314177. The cubic root of 670005 is about 87.5036188979.

The spelling of 670005 in words is "six hundred seventy thousand, five".