673551163 has 2 divisors, whose sum is σ = 673551164. Its totient is φ = 673551162.

The previous prime is 673551161. The next prime is 673551173. The reversal of 673551163 is 361155376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673551163 - 2¹ = 673551161 is a prime.

Together with 673551161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (673551161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336775581 + 336775582.

It is an arithmetic number, because the mean of its divisors is an integer number (336775582).

Almost surely, 2^673551163 is an apocalyptic number.

673551163 is a deficient number, since it is larger than the sum of its proper divisors (1).

673551163 is an equidigital number, since it uses as much as digits as its factorization.

673551163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 37.

The square root of 673551163 is about 25952.8642542591. The cubic root of 673551163 is about 876.5772533507.

The spelling of 673551163 in words is "six hundred seventy-three million, five hundred fifty-one thousand, one hundred sixty-three".