12616541 has 4 divisors (see below), whose sum is σ = 14418912. Its totient is φ = 10814172.

The previous prime is 12616529. The next prime is 12616543. The reversal of 12616541 is 14561621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14561621 = 149 ⋅97729.

It is a cyclic number.

It is not a de Polignac number, because 12616541 - 2¹⁰ = 12615517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12616541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12616543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901175 + ... + 901188.

It is an arithmetic number, because the mean of its divisors is an integer number (3604728).

Almost surely, 2^12616541 is an apocalyptic number.

It is an amenable number.

12616541 is a deficient number, since it is larger than the sum of its proper divisors (1802371).

12616541 is an equidigital number, since it uses as much as digits as its factorization.

12616541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802370.

The product of its digits is 1440, while the sum is 26.

The square root of 12616541 is about 3551.9770551061. The cubic root of 12616541 is about 232.7984589613.

The spelling of 12616541 in words is "twelve million, six hundred sixteen thousand, five hundred forty-one".