12557716 has 12 divisors (see below), whose sum is σ = 22033620. Its totient is φ = 6262400.

The previous prime is 12557711. The next prime is 12557719. The reversal of 12557716 is 61775521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7952400 + 4605316 = 2820^2 + 2146^2 .

It is a super-2 number, since 2×12557716² = 315392462273312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557711) 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, 2311 + ... + 5518.

It is an arithmetic number, because the mean of its divisors is an integer number (1836135).

Almost surely, 2^12557716 is an apocalyptic number.

It is an amenable number.

12557716 is a deficient number, since it is larger than the sum of its proper divisors (9475904).

12557716 is a wasteful number, since it uses less digits than its factorization.

12557716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234 (or 8232 counting only the distinct ones).

The product of its digits is 14700, while the sum is 34.

The square root of 12557716 is about 3543.6867807412. The cubic root of 12557716 is about 232.4360852563.

The spelling of 12557716 in words is "twelve million, five hundred fifty-seven thousand, seven hundred sixteen".