1996217 has 2 divisors, whose sum is σ = 1996218. Its totient is φ = 1996216.

The previous prime is 1996207. The next prime is 1996219. The reversal of 1996217 is 7126991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1297321 + 698896 = 1139^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996217 - 2²⁰ = 947641 is a prime.

It is a super-2 number, since 2×1996217² = 7969764622178, which contains 22 as substring.

Together with 1996219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1996219) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998108 + 998109.

It is an arithmetic number, because the mean of its divisors is an integer number (998109).

2^1996217 is an apocalyptic number.

It is an amenable number.

1996217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996217 is an equidigital number, since it uses as much as digits as its factorization.

1996217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 35.

The square root of 1996217 is about 1412.8754368309. The cubic root of 1996217 is about 125.9126168289.

The spelling of 1996217 in words is "one million, nine hundred ninety-six thousand, two hundred seventeen".