673908663 has 36 divisors (see below), whose sum is σ = 973509864. Its totient is φ = 414504000.

The previous prime is 673908661. The next prime is 673908689. The reversal of 673908663 is 366809376.

It is a happy number.

673908663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 673908663 - 2¹ = 673908661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673908661) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6672313 + ... + 6672413.

Almost surely, 2^673908663 is an apocalyptic number.

673908663 is a deficient number, since it is larger than the sum of its proper divisors (299601201).

673908663 is a wasteful number, since it uses less digits than its factorization.

673908663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 673908663 is about 25959.7508270014. The cubic root of 673908663 is about 876.7323125643.

The spelling of 673908663 in words is "six hundred seventy-three million, nine hundred eight thousand, six hundred sixty-three".