12720263 has 4 divisors (see below), whose sum is σ = 12776040. Its totient is φ = 12664488.

The previous prime is 12720247. The next prime is 12720271. The reversal of 12720263 is 36202721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12720263 - 2⁴ = 12720247 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 (12720283) 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, 27545 + ... + 28002.

It is an arithmetic number, because the mean of its divisors is an integer number (3194010).

Almost surely, 2^12720263 is an apocalyptic number.

12720263 is a deficient number, since it is larger than the sum of its proper divisors (55777).

12720263 is an equidigital number, since it uses as much as digits as its factorization.

12720263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55776.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 12720263 is about 3566.5477706039. The cubic root of 12720263 is about 233.4346727608.

Adding to 12720263 its reverse (36202721), we get a palindrome (48922984).

The spelling of 12720263 in words is "twelve million, seven hundred twenty thousand, two hundred sixty-three".