12587397 has 8 divisors (see below), whose sum is σ = 16911840. Its totient is φ = 8327280.

The previous prime is 12587381. The next prime is 12587401. The reversal of 12587397 is 79378521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12587397 - 2⁴ = 12587381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12587297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15622 + ... + 16407.

It is an arithmetic number, because the mean of its divisors is an integer number (2113980).

Almost surely, 2^12587397 is an apocalyptic number.

It is an amenable number.

12587397 is a deficient number, since it is larger than the sum of its proper divisors (4324443).

12587397 is a wasteful number, since it uses less digits than its factorization.

12587397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32163.

The product of its digits is 105840, while the sum is 42.

The square root of 12587397 is about 3547.8721792083. The cubic root of 12587397 is about 232.6190672361.

The spelling of 12587397 in words is "twelve million, five hundred eighty-seven thousand, three hundred ninety-seven".