2071997 has 2 divisors, whose sum is σ = 2071998. Its totient is φ = 2071996.

The previous prime is 2071991. The next prime is 2071999. The reversal of 2071997 is 7991702.

2071997 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1907161 + 164836 = 1381^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 2071997 - 2¹⁰ = 2070973 is a prime.

Together with 2071999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2071991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035998 + 1035999.

It is an arithmetic number, because the mean of its divisors is an integer number (1035999).

2^2071997 is an apocalyptic number.

It is an amenable number.

2071997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2071997 is an equidigital number, since it uses as much as digits as its factorization.

2071997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 2071997 is about 1439.4432951666. The cubic root of 2071997 is about 127.4861602305.

The spelling of 2071997 in words is "two million, seventy-one thousand, nine hundred ninety-seven".