670181 has 8 divisors (see below), whose sum is σ = 702240. Its totient is φ = 638928.

The previous prime is 670177. The next prime is 670193. The reversal of 670181 is 181076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670181 - 2² = 670177 is a prime.

It is a super-2 number, since 2×670181² = 898285145522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 670181.

It is not an unprimeable number, because it can be changed into a prime (670781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (87780).

2⁶⁷⁰¹⁸¹ is an apocalyptic number.

It is an amenable number.

670181 is a deficient number, since it is larger than the sum of its proper divisors (32059).

670181 is a wasteful number, since it uses less digits than its factorization.

670181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 670181 is about 818.6458330682. The cubic root of 670181 is about 87.5112801784.

The spelling of 670181 in words is "six hundred seventy thousand, one hundred eighty-one".