209970673 has 8 divisors (see below), whose sum is σ = 229468320. Its totient is φ = 190541280.

The previous prime is 209970659. The next prime is 209970707. The reversal of 209970673 is 376079902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209970673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209970613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10515 + ... + 23032.

It is an arithmetic number, because the mean of its divisors is an integer number (28683540).

Almost surely, 2^209970673 is an apocalyptic number.

It is an amenable number.

209970673 is a deficient number, since it is larger than the sum of its proper divisors (19497647).

209970673 is a wasteful number, since it uses less digits than its factorization.

209970673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34127.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 209970673 is about 14490.3648332262. The cubic root of 209970673 is about 594.3645245597.

The spelling of 209970673 in words is "two hundred nine million, nine hundred seventy thousand, six hundred seventy-three".