1906906 has 16 divisors (see below), whose sum is σ = 2986344. Its totient is φ = 912384.

The previous prime is 1906889. The next prime is 1906909. The reversal of 1906906 is 6096091.

It can be written as a sum of positive squares in 4 ways, for example, as 1846881 + 60025 = 1359^2 + 245^2 .

It is not an unprimeable number, because it can be changed into a prime (1906909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5226 + ... + 5578.

2^1906906 is an apocalyptic number.

1906906 is a deficient number, since it is larger than the sum of its proper divisors (1079438).

1906906 is a wasteful number, since it uses less digits than its factorization.

1906906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1906906 is about 1380.9076725111. The cubic root of 1906906 is about 124.0061131221.

The spelling of 1906906 in words is "one million, nine hundred six thousand, nine hundred six".