672804173 has 2 divisors, whose sum is σ = 672804174. Its totient is φ = 672804172.

The previous prime is 672804163. The next prime is 672804221. The reversal of 672804173 is 371408276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409131529 + 263672644 = 20227^2 + 16238^2 .

It is a cyclic number.

It is not a de Polignac number, because 672804173 - 2¹² = 672800077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672804113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336402086 + 336402087.

It is an arithmetic number, because the mean of its divisors is an integer number (336402087).

Almost surely, 2^672804173 is an apocalyptic number.

It is an amenable number.

672804173 is a deficient number, since it is larger than the sum of its proper divisors (1).

672804173 is an equidigital number, since it uses as much as digits as its factorization.

672804173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 672804173 is about 25938.4689794907. The cubic root of 672804173 is about 876.2530826514.

The spelling of 672804173 in words is "six hundred seventy-two million, eight hundred four thousand, one hundred seventy-three".