12656654 has 4 divisors (see below), whose sum is σ = 18984984. Its totient is φ = 6328326.

The previous prime is 12656639. The next prime is 12656671. The reversal of 12656654 is 45665621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45665621 = 17 ⋅2686213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3164162 + ... + 3164165.

It is an arithmetic number, because the mean of its divisors is an integer number (4746246).

Almost surely, 2^12656654 is an apocalyptic number.

12656654 is a deficient number, since it is larger than the sum of its proper divisors (6328330).

12656654 is an equidigital number, since it uses as much as digits as its factorization.

12656654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328329.

The product of its digits is 43200, while the sum is 35.

The square root of 12656654 is about 3557.6191476885. The cubic root of 12656654 is about 233.0449175684.

The spelling of 12656654 in words is "twelve million, six hundred fifty-six thousand, six hundred fifty-four".