673518123 has 6 divisors (see below), whose sum is σ = 972859524. Its totient is φ = 449012076.

The previous prime is 673518113. The next prime is 673518161. The reversal of 673518123 is 321815376.

It is not a de Polignac number, because 673518123 - 2¹² = 673514027 is a prime.

It is a super-3 number, since 3×673518123³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (673518113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37417665 + ... + 37417682.

It is an arithmetic number, because the mean of its divisors is an integer number (162143254).

Almost surely, 2^673518123 is an apocalyptic number.

673518123 is a deficient number, since it is larger than the sum of its proper divisors (299341401).

673518123 is a wasteful number, since it uses less digits than its factorization.

673518123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74835353 (or 74835350 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 673518123 is about 25952.2277078481. The cubic root of 673518123 is about 876.5629200738.

The spelling of 673518123 in words is "six hundred seventy-three million, five hundred eighteen thousand, one hundred twenty-three".