2071897 has 2 divisors, whose sum is σ = 2071898. Its totient is φ = 2071896.

The previous prime is 2071879. The next prime is 2071913. The reversal of 2071897 is 7981702.

Together with previous prime (2071879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2062096 + 9801 = 1436^2 + 99^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2071897 is a prime.

It is not a weakly prime, because it can be changed into another prime (2071837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035948 + 1035949.

It is an arithmetic number, because the mean of its divisors is an integer number (1035949).

2^2071897 is an apocalyptic number.

It is an amenable number.

2071897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2071897 is an equidigital number, since it uses as much as digits as its factorization.

2071897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 2071897 is about 1439.4085590964. The cubic root of 2071897 is about 127.4841092588.

It can be divided in two parts, 20 and 71897, that added together give a palindrome (71917).

The spelling of 2071897 in words is "two million, seventy-one thousand, eight hundred ninety-seven".