12873653 has 4 divisors (see below), whose sum is σ = 13863948. Its totient is φ = 11883360.

The previous prime is 12873611. The next prime is 12873673. The reversal of 12873653 is 35637821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35637821 = 353 ⋅100957.

It can be written as a sum of positive squares in 2 ways, for example, as 8720209 + 4153444 = 2953^2 + 2038^2 .

It is a cyclic number.

It is not a de Polignac number, because 12873653 - 2⁶ = 12873589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12873673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495128 + ... + 495153.

It is an arithmetic number, because the mean of its divisors is an integer number (3465987).

Almost surely, 2^12873653 is an apocalyptic number.

12873653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12873653 is a deficient number, since it is larger than the sum of its proper divisors (990295).

12873653 is an equidigital number, since it uses as much as digits as its factorization.

12873653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990294.

The product of its digits is 30240, while the sum is 35.

The square root of 12873653 is about 3587.9873188182. The cubic root of 12873653 is about 234.3692334700.

The spelling of 12873653 in words is "twelve million, eight hundred seventy-three thousand, six hundred fifty-three".