12456653 has 4 divisors (see below), whose sum is σ = 13589088. Its totient is φ = 11324220.

The previous prime is 12456649. The next prime is 12456667. The reversal of 12456653 is 35665421.

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: 35665421 = 11 ⋅3242311.

It is a cyclic number.

It is not a de Polignac number, because 12456653 - 2² = 12456649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566201 + ... + 566222.

It is an arithmetic number, because the mean of its divisors is an integer number (3397272).

Almost surely, 2^12456653 is an apocalyptic number.

It is an amenable number.

12456653 is a deficient number, since it is larger than the sum of its proper divisors (1132435).

12456653 is a wasteful number, since it uses less digits than its factorization.

12456653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132434.

The product of its digits is 21600, while the sum is 32.

The square root of 12456653 is about 3529.3983906609. The cubic root of 12456653 is about 231.8108657204.

The spelling of 12456653 in words is "twelve million, four hundred fifty-six thousand, six hundred fifty-three".