12722757 has 8 divisors (see below), whose sum is σ = 16987584. Its totient is φ = 8469888.

The previous prime is 12722747. The next prime is 12722767. The reversal of 12722757 is 75722721.

12722757 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12722747) and next prime (12722767).

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

It is not a de Polignac number, because 12722757 - 2⁶ = 12722693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722707) 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, 108 + ... + 5045.

It is an arithmetic number, because the mean of its divisors is an integer number (2123448).

Almost surely, 2^12722757 is an apocalyptic number.

It is an amenable number.

12722757 is a deficient number, since it is larger than the sum of its proper divisors (4264827).

12722757 is an equidigital number, since it uses as much as digits as its factorization.

12722757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979.

The product of its digits is 13720, while the sum is 33.

The square root of 12722757 is about 3566.8973912912. The cubic root of 12722757 is about 233.4499278968.

The spelling of 12722757 in words is "twelve million, seven hundred twenty-two thousand, seven hundred fifty-seven".