11621806 has 16 divisors (see below), whose sum is σ = 20972160. Its totient is φ = 4718520.

The previous prime is 11621801. The next prime is 11621809. The reversal of 11621806 is 60812611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621801) 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 7 ways as a sum of consecutive naturals, for example, 21580 + ... + 22111.

It is an arithmetic number, because the mean of its divisors is an integer number (1310760).

Almost surely, 2^11621806 is an apocalyptic number.

11621806 is a deficient number, since it is larger than the sum of its proper divisors (9350354).

11621806 is a wasteful number, since it uses less digits than its factorization.

11621806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43719.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 11621806 is about 3409.0770011838. The cubic root of 11621806 is about 226.5119960769.

The spelling of 11621806 in words is "eleven million, six hundred twenty-one thousand, eight hundred six".