1606806 has 48 divisors (see below), whose sum is σ = 3790800. Its totient is φ = 489984.

The previous prime is 1606793. The next prime is 1606817. The reversal of 1606806 is 6086061.

It is a self number, because there is not a number n which added to its sum of digits gives 1606806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18010 + ... + 18098.

It is an arithmetic number, because the mean of its divisors is an integer number (78975).

2^1606806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1606806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895400).

1606806 is an abundant number, since it is smaller than the sum of its proper divisors (2183994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606806 is a wasteful number, since it uses less digits than its factorization.

1606806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 170 counting only the distinct ones).

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

The square root of 1606806 is about 1267.5985168814. The cubic root of 1606806 is about 117.1263154740.

The spelling of 1606806 in words is "one million, six hundred six thousand, eight hundred six".