670636 has 12 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 333680.

The previous prime is 670627. The next prime is 670639. The reversal of 670636 is 636076.

It is not an unprimeable number, because it can be changed into a prime (670639) 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 in 3 ways as a sum of consecutive naturals, for example, 1341 + ... + 1771.

It is an arithmetic number, because the mean of its divisors is an integer number (98280).

2⁶⁷⁰⁶³⁶ is an apocalyptic number.

It is an amenable number.

670636 is a deficient number, since it is larger than the sum of its proper divisors (508724).

670636 is a wasteful number, since it uses less digits than its factorization.

670636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 670636 is about 818.9236838680. The cubic root of 670636 is about 87.5310801155.

The spelling of 670636 in words is "six hundred seventy thousand, six hundred thirty-six".