12546657 has 10 divisors (see below), whose sum is σ = 18742658. Its totient is φ = 8364384.

The previous prime is 12546643. The next prime is 12546683. The reversal of 12546657 is 75664521.

It is a happy number.

12546657 is digitally balanced in base 3, because in such base 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., 8767521 + 3779136 = 2961^2 + 1944^2 .

It is not a de Polignac number, because 12546657 - 2¹⁰ = 12545633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12546617) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 77368 + ... + 77529.

Almost surely, 2^12546657 is an apocalyptic number.

It is an amenable number.

12546657 is a deficient number, since it is larger than the sum of its proper divisors (6196001).

12546657 is an equidigital number, since it uses as much as digits as its factorization.

12546657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154909 (or 154900 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 12546657 is about 3542.1260564808. The cubic root of 12546657 is about 232.3678333116.

It can be divided in two parts, 12546 and 657, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12546657 in words is "twelve million, five hundred forty-six thousand, six hundred fifty-seven".