12596721 has 8 divisors (see below), whose sum is σ = 17186400. Its totient is φ = 8202432.

The previous prime is 12596719. The next prime is 12596743. The reversal of 12596721 is 12769521.

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

It is not a de Polignac number, because 12596721 - 2¹ = 12596719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12596321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48696 + ... + 48953.

It is an arithmetic number, because the mean of its divisors is an integer number (2148300).

Almost surely, 2^12596721 is an apocalyptic number.

It is an amenable number.

12596721 is a deficient number, since it is larger than the sum of its proper divisors (4589679).

12596721 is an equidigital number, since it uses as much as digits as its factorization.

12596721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97695.

The product of its digits is 7560, while the sum is 33.

The square root of 12596721 is about 3549.1859630062. The cubic root of 12596721 is about 232.6764898804.

The spelling of 12596721 in words is "twelve million, five hundred ninety-six thousand, seven hundred twenty-one".