670018 has 4 divisors (see below), whose sum is σ = 1005030. Its totient is φ = 335008.

The previous prime is 670001. The next prime is 670031. The reversal of 670018 is 810076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 18769 = 807^2 + 137^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167503 + ... + 167506.

2⁶⁷⁰⁰¹⁸ is an apocalyptic number.

670018 is a deficient number, since it is larger than the sum of its proper divisors (335012).

670018 is a wasteful number, since it uses less digits than its factorization.

670018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335011.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 670018 is about 818.5462723634. The cubic root of 670018 is about 87.5041848339.

The spelling of 670018 in words is "six hundred seventy thousand, eighteen".