670643206 has 16 divisors (see below), whose sum is σ = 1024750080. Its totient is φ = 329079240.

The previous prime is 670643107. The next prime is 670643221. The reversal of 670643206 is 602346076.

670643206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69955 + ... + 78961.

It is an arithmetic number, because the mean of its divisors is an integer number (64046880).

Almost surely, 2^670643206 is an apocalyptic number.

670643206 is a deficient number, since it is larger than the sum of its proper divisors (354106874).

670643206 is a wasteful number, since it uses less digits than its factorization.

670643206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9699.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 670643206 is about 25896.7798384278. The cubic root of 670643206 is about 875.3139362219.

The spelling of 670643206 in words is "six hundred seventy million, six hundred forty-three thousand, two hundred six".