1906606 has 8 divisors (see below), whose sum is σ = 3079944. Its totient is φ = 879960.

The previous prime is 1906603. The next prime is 1906607. The reversal of 1906606 is 6066091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906603) 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 3 ways as a sum of consecutive naturals, for example, 36640 + ... + 36691.

It is an arithmetic number, because the mean of its divisors is an integer number (384993).

2^1906606 is an apocalyptic number.

1906606 is a deficient number, since it is larger than the sum of its proper divisors (1173338).

1906606 is a wasteful number, since it uses less digits than its factorization.

1906606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73346.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1906606 is about 1380.7990440321. The cubic root of 1906606 is about 123.9996097802. Note that the first 3 decimals are identical.

The spelling of 1906606 in words is "one million, nine hundred six thousand, six hundred six".