670738 has 12 divisors (see below), whose sum is σ = 1062990. Its totient is φ = 317376.

The previous prime is 670729. The next prime is 670739. The reversal of 670738 is 837076.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 3249 = 817^2 + 57^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258 + ... + 1186.

2⁶⁷⁰⁷³⁸ is an apocalyptic number.

670738 is a deficient number, since it is larger than the sum of its proper divisors (392252).

670738 is a wasteful number, since it uses less digits than its factorization.

670738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 670738 is about 818.9859583656. The cubic root of 670738 is about 87.5355175537.

It can be divided in two parts, 67073 and 8, that added together give a square (67081 = 259²).

The spelling of 670738 in words is "six hundred seventy thousand, seven hundred thirty-eight".