2071717 has 4 divisors (see below), whose sum is σ = 2110860. Its totient is φ = 2032576.

The previous prime is 2071711. The next prime is 2071721. The reversal of 2071717 is 7171702.

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 1083681 + 988036 = 1041^2 + 994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2071717 is a prime.

It is a super-2 number, since 2×2071717² = 8584022656178, which contains 22 as substring.

It is a Duffinian number.

2071717 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2071691 and 2071700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19492 + ... + 19597.

It is an arithmetic number, because the mean of its divisors is an integer number (527715).

2^2071717 is an apocalyptic number.

It is an amenable number.

2071717 is a deficient number, since it is larger than the sum of its proper divisors (39143).

2071717 is an equidigital number, since it uses as much as digits as its factorization.

2071717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39142.

The product of its (nonzero) digits is 686, while the sum is 25.

The square root of 2071717 is about 1439.3460320576. The cubic root of 2071717 is about 127.4804173436.

The spelling of 2071717 in words is "two million, seventy-one thousand, seven hundred seventeen".