670172112 has 60 divisors (see below), whose sum is σ = 1892802340. Its totient is φ = 221336064.

The previous prime is 670172099. The next prime is 670172119. The reversal of 670172112 is 211271076.

It can be written as a sum of positive squares in 2 ways, for example, as 267126336 + 403045776 = 16344^2 + 20076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670172119) 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, 5653 + ... + 37044.

Almost surely, 2^670172112 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 670172112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (946401170).

670172112 is an abundant number, since it is smaller than the sum of its proper divisors (1222630228).

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

670172112 is a wasteful number, since it uses less digits than its factorization.

670172112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42820 (or 42811 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 670172112 is about 25887.6826309347. The cubic root of 670172112 is about 875.1089331589.

The spelling of 670172112 in words is "six hundred seventy million, one hundred seventy-two thousand, one hundred twelve".