673928109 has 12 divisors (see below), whose sum is σ = 973679200. Its totient is φ = 449180424.

The previous prime is 673928069. The next prime is 673928117. The reversal of 673928109 is 901829376.

673928109 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 673928109 - 2¹⁶ = 673862573 is a prime.

It is a super-2 number, since 2×673928109² = 908358192200631762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673928209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62112 + ... + 72150.

Almost surely, 2^673928109 is an apocalyptic number.

It is an amenable number.

673928109 is a deficient number, since it is larger than the sum of its proper divisors (299751091).

673928109 is a wasteful number, since it uses less digits than its factorization.

673928109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17504 (or 17501 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 673928109 is about 25960.1253656449. The cubic root of 673928109 is about 876.7407453453.

The spelling of 673928109 in words is "six hundred seventy-three million, nine hundred twenty-eight thousand, one hundred nine".