670804 has 12 divisors (see below), whose sum is σ = 1191904. Its totient is φ = 330264.

The previous prime is 670781. The next prime is 670811. The reversal of 670804 is 408076.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

670804 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984 + ... + 1519.

2⁶⁷⁰⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

670804 is a deficient number, since it is larger than the sum of its proper divisors (521100).

670804 is a wasteful number, since it uses less digits than its factorization.

670804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2572 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 670804 is about 819.0262511055. The cubic root of 670804 is about 87.5383885976.

The spelling of 670804 in words is "six hundred seventy thousand, eight hundred four".