672389609 has 2 divisors, whose sum is σ = 672389610. Its totient is φ = 672389608.

The previous prime is 672389591. The next prime is 672389617. The reversal of 672389609 is 906983276.

672389609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 536154025 + 136235584 = 23155^2 + 11672^2 .

It is a cyclic number.

It is not a de Polignac number, because 672389609 - 2¹⁶ = 672324073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672389629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336194804 + 336194805.

It is an arithmetic number, because the mean of its divisors is an integer number (336194805).

Almost surely, 2^672389609 is an apocalyptic number.

It is an amenable number.

672389609 is a deficient number, since it is larger than the sum of its proper divisors (1).

672389609 is an equidigital number, since it uses as much as digits as its factorization.

672389609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 672389609 is about 25930.4764514654. The cubic root of 672389609 is about 876.0730710750.

The spelling of 672389609 in words is "six hundred seventy-two million, three hundred eighty-nine thousand, six hundred nine".