2061817 has 4 divisors (see below), whose sum is σ = 2070900. Its totient is φ = 2052736.

The previous prime is 2061793. The next prime is 2061847. The reversal of 2061817 is 7181602.

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

It can be written as a sum of positive squares in 2 ways, for example, as 132496 + 1929321 = 364^2 + 1389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061817 - 2¹¹ = 2059769 is a prime.

It is a Duffinian number.

2061817 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2061791 and 2061800.

It is not an unprimeable number, because it can be changed into a prime (2061847) 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, 4192 + ... + 4657.

It is an arithmetic number, because the mean of its divisors is an integer number (517725).

2^2061817 is an apocalyptic number.

It is an amenable number.

2061817 is a deficient number, since it is larger than the sum of its proper divisors (9083).

2061817 is an equidigital number, since it uses as much as digits as its factorization.

2061817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9082.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2061817 is about 1435.9028518671. The cubic root of 2061817 is about 127.2770318117.

The spelling of 2061817 in words is "two million, sixty-one thousand, eight hundred seventeen".