670712 has 48 divisors (see below), whose sum is σ = 1539000. Its totient is φ = 272832.

The previous prime is 670711. The next prime is 670727. The reversal of 670712 is 217076.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11339 + ... + 11397.

2⁶⁷⁰⁷¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769500).

670712 is an abundant number, since it is smaller than the sum of its proper divisors (868288).

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

670712 is a wasteful number, since it uses less digits than its factorization.

670712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 670712 is about 818.9700849237. The cubic root of 670712 is about 87.5343864847.

Adding to 670712 its reverse (217076), we get a palindrome (887788).

The spelling of 670712 in words is "six hundred seventy thousand, seven hundred twelve".