2168653 has 2 divisors, whose sum is σ = 2168654. Its totient is φ = 2168652.

The previous prime is 2168651. The next prime is 2168657. The reversal of 2168653 is 3568612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2064969 + 103684 = 1437^2 + 322^2 .

It is a cyclic number.

It is not a de Polignac number, because 2168653 - 2¹ = 2168651 is a prime.

It is a super-3 number, since 3×2168653³ = 30597888433375743231, which contains 333 as substring.

Together with 2168651, it forms a pair of twin primes.

2168653 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084326 + 1084327.

It is an arithmetic number, because the mean of its divisors is an integer number (1084327).

2^2168653 is an apocalyptic number.

It is an amenable number.

2168653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168653 is an equidigital number, since it uses as much as digits as its factorization.

2168653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 2168653 is about 1472.6347137019. The cubic root of 2168653 is about 129.4384655204.

The spelling of 2168653 in words is "two million, one hundred sixty-eight thousand, six hundred fifty-three".