670444 has 6 divisors (see below), whose sum is σ = 1173284. Its totient is φ = 335220.

The previous prime is 670409. The next prime is 670447. The reversal of 670444 is 444076.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (670447) 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 as a sum of consecutive naturals, namely, 83802 + ... + 83809.

2⁶⁷⁰⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

670444 is a deficient number, since it is larger than the sum of its proper divisors (502840).

670444 is a wasteful number, since it uses less digits than its factorization.

670444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167615 (or 167613 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 670444 is about 818.8064484358. The cubic root of 670444 is about 87.5227260697.

The spelling of 670444 in words is "six hundred seventy thousand, four hundred forty-four".