672181583 has 2 divisors, whose sum is σ = 672181584. Its totient is φ = 672181582.

The previous prime is 672181571. The next prime is 672181589. The reversal of 672181583 is 385181276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672181583 - 2⁸ = 672181327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672181583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672181589) 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, 336090791 + 336090792.

It is an arithmetic number, because the mean of its divisors is an integer number (336090792).

Almost surely, 2^672181583 is an apocalyptic number.

672181583 is a deficient number, since it is larger than the sum of its proper divisors (1).

672181583 is an equidigital number, since it uses as much as digits as its factorization.

672181583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 672181583 is about 25926.4649152174. The cubic root of 672181583 is about 875.9827143472.

The spelling of 672181583 in words is "six hundred seventy-two million, one hundred eighty-one thousand, five hundred eighty-three".