12773721 has 8 divisors (see below), whose sum is σ = 17060544. Its totient is φ = 8501360.

The previous prime is 12773711. The next prime is 12773737. The reversal of 12773721 is 12737721.

12773721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12773721 - 2¹⁵ = 12740953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12773701) 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, 1350 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (2132568).

Almost surely, 2^12773721 is an apocalyptic number.

It is an amenable number.

12773721 is a deficient number, since it is larger than the sum of its proper divisors (4286823).

12773721 is an equidigital number, since it uses as much as digits as its factorization.

12773721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7231.

The product of its digits is 4116, while the sum is 30.

The square root of 12773721 is about 3574.0342751574. The cubic root of 12773721 is about 233.7612254992.

The spelling of 12773721 in words is "twelve million, seven hundred seventy-three thousand, seven hundred twenty-one".