673898805 has 16 divisors (see below), whose sum is σ = 1198042560. Its totient is φ = 359412624.

The previous prime is 673898789. The next prime is 673898809. The reversal of 673898805 is 508898376.

It is a happy number.

It is not a de Polignac number, because 673898805 - 2⁴ = 673898789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673898809) 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 in 15 ways as a sum of consecutive naturals, for example, 2495787 + ... + 2496056.

It is an arithmetic number, because the mean of its divisors is an integer number (74877660).

Almost surely, 2^673898805 is an apocalyptic number.

It is an amenable number.

673898805 is a deficient number, since it is larger than the sum of its proper divisors (524143755).

673898805 is a wasteful number, since it uses less digits than its factorization.

673898805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991857 (or 4991851 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 673898805 is about 25959.5609554553. The cubic root of 673898805 is about 876.7280375689.

The spelling of 673898805 in words is "six hundred seventy-three million, eight hundred ninety-eight thousand, eight hundred five".