12720753 has 8 divisors (see below), whose sum is σ = 18845600. Its totient is φ = 8480484.

The previous prime is 12720751. The next prime is 12720767. The reversal of 12720753 is 35702721.

It is not a de Polignac number, because 12720753 - 2¹ = 12720751 is a prime.

It is a super-3 number, since 3×12720753³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 471139 = 12720753 / (1 + 2 + 7 + 2 + 0 + 7 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12720751) 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, 235543 + ... + 235596.

It is an arithmetic number, because the mean of its divisors is an integer number (2355700).

Almost surely, 2^12720753 is an apocalyptic number.

It is an amenable number.

12720753 is a deficient number, since it is larger than the sum of its proper divisors (6124847).

12720753 is an equidigital number, since it uses as much as digits as its factorization.

12720753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471148 (or 471142 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 12720753 is about 3566.6164638211. The cubic root of 12720753 is about 233.4376701181.

It can be divided in two parts, 127207 and 53, that added together give a triangular number (127260 = T₅₀₄).

The spelling of 12720753 in words is "twelve million, seven hundred twenty thousand, seven hundred fifty-three".