2061806 has 12 divisors (see below), whose sum is σ = 3160752. Its totient is φ = 1008696.

The previous prime is 2061793. The next prime is 2061847. The reversal of 2061806 is 6081602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5435 + ... + 5801.

It is an arithmetic number, because the mean of its divisors is an integer number (263396).

2^2061806 is an apocalyptic number.

2061806 is a deficient number, since it is larger than the sum of its proper divisors (1098946).

2061806 is an equidigital number, since it uses as much as digits as its factorization.

2061806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2061806 is about 1435.8990215193. The cubic root of 2061806 is about 127.2768054661.

The spelling of 2061806 in words is "two million, sixty-one thousand, eight hundred six".