2061811 has 4 divisors (see below), whose sum is σ = 2183112. Its totient is φ = 1940512.

The previous prime is 2061793. The next prime is 2061847. The reversal of 2061811 is 1181602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2061811 - 2¹¹ = 2059763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2067811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60625 + ... + 60658.

It is an arithmetic number, because the mean of its divisors is an integer number (545778).

2^2061811 is an apocalyptic number.

2061811 is a deficient number, since it is larger than the sum of its proper divisors (121301).

2061811 is a wasteful number, since it uses less digits than its factorization.

2061811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121300.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 2061811 is about 1435.9007625877. The cubic root of 2061811 is about 127.2769083506.

The spelling of 2061811 in words is "two million, sixty-one thousand, eight hundred eleven".