2071917 has 6 divisors (see below), whose sum is σ = 2992782. Its totient is φ = 1381272.

The previous prime is 2071913. The next prime is 2071921. The reversal of 2071917 is 7191702.

It is an interprime number because it is at equal distance from previous prime (2071913) and next prime (2071921).

It can be written as a sum of positive squares in only one way, i.e., 1887876 + 184041 = 1374^2 + 429^2 .

It is not a de Polignac number, because 2071917 - 2² = 2071913 is a prime.

2071917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115098 + ... + 115115.

It is an arithmetic number, because the mean of its divisors is an integer number (498797).

2^2071917 is an apocalyptic number.

It is an amenable number.

2071917 is a deficient number, since it is larger than the sum of its proper divisors (920865).

2071917 is a wasteful number, since it uses less digits than its factorization.

2071917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230219 (or 230216 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 2071917 is about 1439.4155063775. The cubic root of 2071917 is about 127.4845194584.

It can be divided in two parts, 20719 and 17, that added together give a 4-th power (20736 = 12⁴).

The spelling of 2071917 in words is "two million, seventy-one thousand, nine hundred seventeen".