672259209 has 16 divisors (see below), whose sum is σ = 902059200. Its totient is φ = 445326336.

The previous prime is 672259207. The next prime is 672259229. The reversal of 672259209 is 902952276.

It is not a de Polignac number, because 672259209 - 2¹ = 672259207 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (672259207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354937 + ... + 356825.

It is an arithmetic number, because the mean of its divisors is an integer number (56378700).

Almost surely, 2^672259209 is an apocalyptic number.

It is an amenable number.

672259209 is a deficient number, since it is larger than the sum of its proper divisors (229799991).

672259209 is a wasteful number, since it uses less digits than its factorization.

672259209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 672259209 is about 25927.9619137332. The cubic root of 672259209 is about 876.0164336172.

The spelling of 672259209 in words is "six hundred seventy-two million, two hundred fifty-nine thousand, two hundred nine".