2061813 has 16 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 1224384.

The previous prime is 2061793. The next prime is 2061847. The reversal of 2061813 is 3181602.

It is not a de Polignac number, because 2061813 - 2¹³ = 2053621 is a prime.

2061813 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2061813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220 + ... + 2042.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

2^2061813 is an apocalyptic number.

It is an amenable number.

2061813 is a deficient number, since it is larger than the sum of its proper divisors (1002507).

2061813 is a wasteful number, since it uses less digits than its factorization.

2061813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2061813 is about 1435.9014590145. The cubic root of 2061813 is about 127.2769495043.

The spelling of 2061813 in words is "two million, sixty-one thousand, eight hundred thirteen".