12597621 has 16 divisors (see below), whose sum is σ = 17272320. Its totient is φ = 8164080.

The previous prime is 12597553. The next prime is 12597643. The reversal of 12597621 is 12679521.

It is not a de Polignac number, because 12597621 - 2¹¹ = 12595573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12597121) 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 15 ways as a sum of consecutive naturals, for example, 17886 + ... + 18576.

It is an arithmetic number, because the mean of its divisors is an integer number (1079520).

Almost surely, 2^12597621 is an apocalyptic number.

It is an amenable number.

12597621 is a deficient number, since it is larger than the sum of its proper divisors (4674699).

12597621 is a wasteful number, since it uses less digits than its factorization.

12597621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

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

The square root of 12597621 is about 3549.3127503786. The cubic root of 12597621 is about 232.6820311070.

The spelling of 12597621 in words is "twelve million, five hundred ninety-seven thousand, six hundred twenty-one".