12615963 has 4 divisors (see below), whose sum is σ = 16821288. Its totient is φ = 8410640.

The previous prime is 12615949. The next prime is 12615991. The reversal of 12615963 is 36951621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12615963 - 2⁴ = 12615947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12615913) 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, 2102658 + ... + 2102663.

It is an arithmetic number, because the mean of its divisors is an integer number (4205322).

Almost surely, 2^12615963 is an apocalyptic number.

12615963 is a deficient number, since it is larger than the sum of its proper divisors (4205325).

12615963 is an equidigital number, since it uses as much as digits as its factorization.

12615963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205324.

The product of its digits is 9720, while the sum is 33.

The square root of 12615963 is about 3551.8956910360. The cubic root of 12615963 is about 232.7949038516.

The spelling of 12615963 in words is "twelve million, six hundred fifteen thousand, nine hundred sixty-three".