12996649 has 4 divisors (see below), whose sum is σ = 13009536. Its totient is φ = 12983764.

The previous prime is 12996647. The next prime is 12996661. The reversal of 12996649 is 94669921.

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: 94669921 = 251 ⋅377171.

It is a cyclic number.

It is not a de Polignac number, because 12996649 - 2¹ = 12996647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12996599 and 12996608.

It is not an unprimeable number, because it can be changed into a prime (12996647) 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, 4789 + ... + 6994.

It is an arithmetic number, because the mean of its divisors is an integer number (3252384).

Almost surely, 2^12996649 is an apocalyptic number.

It is an amenable number.

12996649 is a deficient number, since it is larger than the sum of its proper divisors (12887).

12996649 is a wasteful number, since it uses less digits than its factorization.

12996649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12886.

The product of its digits is 209952, while the sum is 46.

The square root of 12996649 is about 3605.0865454244. The cubic root of 12996649 is about 235.1132636448.

The spelling of 12996649 in words is "twelve million, nine hundred ninety-six thousand, six hundred forty-nine".