12963557 has 4 divisors (see below), whose sum is σ = 13056960. Its totient is φ = 12870156.

The previous prime is 12963499. The next prime is 12963563. The reversal of 12963557 is 75536921.

It is a happy number.

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: 75536921 = 587 ⋅128683.

It is a cyclic number.

It is not a de Polignac number, because 12963557 - 2¹⁰ = 12962533 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 12963557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12963857) 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, 46493 + ... + 46770.

It is an arithmetic number, because the mean of its divisors is an integer number (3264240).

Almost surely, 2^12963557 is an apocalyptic number.

It is an amenable number.

12963557 is a deficient number, since it is larger than the sum of its proper divisors (93403).

12963557 is an equidigital number, since it uses as much as digits as its factorization.

12963557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93402.

The product of its digits is 56700, while the sum is 38.

The square root of 12963557 is about 3600.4939938847. The cubic root of 12963557 is about 234.9135459862.

The spelling of 12963557 in words is "twelve million, nine hundred sixty-three thousand, five hundred fifty-seven".