12597147 has 8 divisors (see below), whose sum is σ = 18662480. Its totient is φ = 8398080.

The previous prime is 12597121. The next prime is 12597157. The reversal of 12597147 is 74179521.

It is a happy number.

12597147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12597147 - 2⁶ = 12597083 is a prime.

It is a super-4 number, since 4×12597147⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12597157) 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, 233254 + ... + 233307.

It is an arithmetic number, because the mean of its divisors is an integer number (2332810).

Almost surely, 2^12597147 is an apocalyptic number.

12597147 is a deficient number, since it is larger than the sum of its proper divisors (6065333).

12597147 is an equidigital number, since it uses as much as digits as its factorization.

12597147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466570 (or 466564 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 12597147 is about 3549.2459762603. The cubic root of 12597147 is about 232.6791127606.

The spelling of 12597147 in words is "twelve million, five hundred ninety-seven thousand, one hundred forty-seven".