12648215 has 4 divisors (see below), whose sum is σ = 15177864. Its totient is φ = 10118568.

The previous prime is 12648173. The next prime is 12648239. The reversal of 12648215 is 51284621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51284621 = 83 ⋅617887.

It is a cyclic number.

It is not a de Polignac number, because 12648215 - 2⁶ = 12648151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264817 + ... + 1264826.

It is an arithmetic number, because the mean of its divisors is an integer number (3794466).

Almost surely, 2^12648215 is an apocalyptic number.

12648215 is a deficient number, since it is larger than the sum of its proper divisors (2529649).

12648215 is an equidigital number, since it uses as much as digits as its factorization.

12648215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529648.

The product of its digits is 3840, while the sum is 29.

The square root of 12648215 is about 3556.4329039081. The cubic root of 12648215 is about 232.9931107396.

The spelling of 12648215 in words is "twelve million, six hundred forty-eight thousand, two hundred fifteen".