673771836 has 12 divisors (see below), whose sum is σ = 1572134312. Its totient is φ = 224590608.

The previous prime is 673771817. The next prime is 673771843. The reversal of 673771836 is 638177376.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28073815 + ... + 28073838.

Almost surely, 2^673771836 is an apocalyptic number.

It is an amenable number.

673771836 is an abundant number, since it is smaller than the sum of its proper divisors (898362476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673771836 is a wasteful number, since it uses less digits than its factorization.

673771836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56147660 (or 56147658 counting only the distinct ones).

The product of its digits is 889056, while the sum is 48.

The square root of 673771836 is about 25957.1153250896. The cubic root of 673771836 is about 876.6729727861.

The spelling of 673771836 in words is "six hundred seventy-three million, seven hundred seventy-one thousand, eight hundred thirty-six".