673856671 has 2 divisors, whose sum is σ = 673856672. Its totient is φ = 673856670.

The previous prime is 673856657. The next prime is 673856699. The reversal of 673856671 is 176658376.

673856671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673856671 - 2⁹ = 673856159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673856611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336928335 + 336928336.

It is an arithmetic number, because the mean of its divisors is an integer number (336928336).

Almost surely, 2^673856671 is an apocalyptic number.

673856671 is a deficient number, since it is larger than the sum of its proper divisors (1).

673856671 is an equidigital number, since it uses as much as digits as its factorization.

673856671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 673856671 is about 25958.7494113257. The cubic root of 673856671 is about 876.7097653749.

The spelling of 673856671 in words is "six hundred seventy-three million, eight hundred fifty-six thousand, six hundred seventy-one".