673055987 has 2 divisors, whose sum is σ = 673055988. Its totient is φ = 673055986.

The previous prime is 673055953. The next prime is 673056031. The reversal of 673055987 is 789550376.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673055987 - 2²⁰ = 672007411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (673055917) 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, 336527993 + 336527994.

It is an arithmetic number, because the mean of its divisors is an integer number (336527994).

Almost surely, 2^673055987 is an apocalyptic number.

673055987 is a deficient number, since it is larger than the sum of its proper divisors (1).

673055987 is an equidigital number, since it uses as much as digits as its factorization.

673055987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The square root of 673055987 is about 25943.3225898303. The cubic root of 673055987 is about 876.3623889846.

The spelling of 673055987 in words is "six hundred seventy-three million, fifty-five thousand, nine hundred eighty-seven".