2164817 has 2 divisors, whose sum is σ = 2164818. Its totient is φ = 2164816.

The previous prime is 2164807. The next prime is 2164843. The reversal of 2164817 is 7184612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1893376 + 271441 = 1376^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164817 - 2⁴ = 2164801 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2164817.

It is not a weakly prime, because it can be changed into another prime (2164807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082408 + 1082409.

It is an arithmetic number, because the mean of its divisors is an integer number (1082409).

2^2164817 is an apocalyptic number.

It is an amenable number.

2164817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164817 is an equidigital number, since it uses as much as digits as its factorization.

2164817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 2164817 is about 1471.3317097106. The cubic root of 2164817 is about 129.3621018360.

The spelling of 2164817 in words is "two million, one hundred sixty-four thousand, eight hundred seventeen".