2011906 has 16 divisors (see below), whose sum is σ = 3273984. Its totient is φ = 921744.

The previous prime is 2011903. The next prime is 2011907. The reversal of 2011906 is 6091102.

It is not an unprimeable number, because it can be changed into a prime (2011903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5625 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (204624).

2^2011906 is an apocalyptic number.

2011906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2011906 is a deficient number, since it is larger than the sum of its proper divisors (1262078).

2011906 is a wasteful number, since it uses less digits than its factorization.

2011906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 2011906 is about 1418.4167229697. The cubic root of 2011906 is about 126.2416208536.

The spelling of 2011906 in words is "two million, eleven thousand, nine hundred six".