12673921 has 8 divisors (see below), whose sum is σ = 13853504. Its totient is φ = 11523600.

The previous prime is 12673919. The next prime is 12673933. The reversal of 12673921 is 12937621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12673921 - 2¹ = 12673919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12673901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6405 + ... + 8146.

It is an arithmetic number, because the mean of its divisors is an integer number (1731688).

Almost surely, 2^12673921 is an apocalyptic number.

It is an amenable number.

12673921 is a deficient number, since it is larger than the sum of its proper divisors (1179583).

12673921 is a wasteful number, since it uses less digits than its factorization.

12673921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14631.

The product of its digits is 4536, while the sum is 31.

The square root of 12673921 is about 3560.0450839842. The cubic root of 12673921 is about 233.1508475678.

It can be divided in two parts, 126 and 73921, that added together give a palindrome (74047).

The spelling of 12673921 in words is "twelve million, six hundred seventy-three thousand, nine hundred twenty-one".