11222649 has 6 divisors (see below), whose sum is σ = 16210506. Its totient is φ = 7481760.

The previous prime is 11222621. The next prime is 11222671. The reversal of 11222649 is 94622211.

11222649 is a `hidden beast` number, since 1 + 12 + 2 + 2 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10517049 + 705600 = 3243^2 + 840^2 .

It is not a de Polignac number, because 11222649 - 2²¹ = 9125497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11223649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623472 + ... + 623489.

It is an arithmetic number, because the mean of its divisors is an integer number (2701751).

Almost surely, 2^11222649 is an apocalyptic number.

It is an amenable number.

11222649 is a deficient number, since it is larger than the sum of its proper divisors (4987857).

11222649 is a wasteful number, since it uses less digits than its factorization.

11222649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246967 (or 1246964 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 11222649 is about 3350.0222387322. The cubic root of 11222649 is about 223.8885034507. Note that the first 3 decimals are identical.

The spelling of 11222649 in words is "eleven million, two hundred twenty-two thousand, six hundred forty-nine".