12616557 has 8 divisors (see below), whose sum is σ = 16838976. Its totient is φ = 8402592.

The previous prime is 12616553. The next prime is 12616559. The reversal of 12616557 is 75561621.

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

It is not a de Polignac number, because 12616557 - 2² = 12616553 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12616553) 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, 3513 + ... + 6129.

It is an arithmetic number, because the mean of its divisors is an integer number (2104872).

Almost surely, 2^12616557 is an apocalyptic number.

It is an amenable number.

12616557 is a deficient number, since it is larger than the sum of its proper divisors (4222419).

12616557 is a wasteful number, since it uses less digits than its factorization.

12616557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227.

The product of its digits is 12600, while the sum is 33.

The square root of 12616557 is about 3551.9793073722. The cubic root of 12616557 is about 232.7985573711.

The spelling of 12616557 in words is "twelve million, six hundred sixteen thousand, five hundred fifty-seven".