670770 has 48 divisors (see below), whose sum is σ = 1811160. Its totient is φ = 172032.

The previous prime is 670763. The next prime is 670777. The reversal of 670770 is 77076.

It is an interprime number because it is at equal distance from previous prime (670763) and next prime (670777).

It can be written as a sum of positive squares in 4 ways, for example, as 660969 + 9801 = 813^2 + 99^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (670777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2482 + ... + 2738.

2⁶⁷⁰⁷⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905580).

670770 is an abundant number, since it is smaller than the sum of its proper divisors (1140390).

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

670770 is a wasteful number, since it uses less digits than its factorization.

670770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The square root of 670770 is about 819.0054944871. The cubic root of 670770 is about 87.5369095985.

The spelling of 670770 in words is "six hundred seventy thousand, seven hundred seventy".