12723957 has 6 divisors (see below), whose sum is σ = 18379062. Its totient is φ = 8482632.

The previous prime is 12723947. The next prime is 12723959. The reversal of 12723957 is 75932721.

12723957 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10536516 + 2187441 = 3246^2 + 1479^2 .

It is not a de Polignac number, because 12723957 - 2⁴ = 12723941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 706878 + ... + 706895.

It is an arithmetic number, because the mean of its divisors is an integer number (3063177).

Almost surely, 2^12723957 is an apocalyptic number.

It is an amenable number.

12723957 is a deficient number, since it is larger than the sum of its proper divisors (5655105).

12723957 is a wasteful number, since it uses less digits than its factorization.

12723957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413779 (or 1413776 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 12723957 is about 3567.0656007424. The cubic root of 12723957 is about 233.4572672680.

The spelling of 12723957 in words is "twelve million, seven hundred twenty-three thousand, nine hundred fifty-seven".