12649833 has 24 divisors (see below), whose sum is σ = 21008000. Its totient is φ = 7185024.

The previous prime is 12649823. The next prime is 12649841. The reversal of 12649833 is 33894621.

12649833 is a `hidden beast` number, since 1 + 2 + 649 + 8 + 3 + 3 = 666.

It is not a de Polignac number, because 12649833 - 2⁸ = 12649577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12649823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12033 + ... + 13041.

Almost surely, 2^12649833 is an apocalyptic number.

It is an amenable number.

12649833 is a deficient number, since it is larger than the sum of its proper divisors (8358167).

12649833 is a wasteful number, since it uses less digits than its factorization.

12649833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1218 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 12649833 is about 3556.6603717533. The cubic root of 12649833 is about 233.0030453899.

The spelling of 12649833 in words is "twelve million, six hundred forty-nine thousand, eight hundred thirty-three".