667396 has 6 divisors (see below), whose sum is σ = 1167950. Its totient is φ = 333696.

The previous prime is 667379. The next prime is 667417. The reversal of 667396 is 693766.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 148996 = 720^2 + 386^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83421 + ... + 83428.

2⁶⁶⁷³⁹⁶ is an apocalyptic number.

It is an amenable number.

667396 is a deficient number, since it is larger than the sum of its proper divisors (500554).

667396 is a wasteful number, since it uses less digits than its factorization.

667396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166853 (or 166851 counting only the distinct ones).

The product of its digits is 40824, while the sum is 37.

The square root of 667396 is about 816.9430824727. The cubic root of 667396 is about 87.3898914313.

The spelling of 667396 in words is "six hundred sixty-seven thousand, three hundred ninety-six".