12384657 has 10 divisors (see below), whose sum is σ = 18500658. Its totient is φ = 8256384.

The previous prime is 12384643. The next prime is 12384661. The reversal of 12384657 is 75648321.

It can be written as a sum of positive squares in only one way, i.e., 12383361 + 1296 = 3519^2 + 36^2 .

It is not a de Polignac number, because 12384657 - 2⁸ = 12384401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12384607) 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, 76368 + ... + 76529.

Almost surely, 2^12384657 is an apocalyptic number.

It is an amenable number.

12384657 is a deficient number, since it is larger than the sum of its proper divisors (6116001).

12384657 is an equidigital number, since it uses as much as digits as its factorization.

12384657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152909 (or 152900 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 12384657 is about 3519.1841384048. The cubic root of 12384657 is about 231.3634016971.

It can be divided in two parts, 12384 and 657, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12384657 in words is "twelve million, three hundred eighty-four thousand, six hundred fifty-seven".