2163653 has 2 divisors, whose sum is σ = 2163654. Its totient is φ = 2163652.

The previous prime is 2163613. The next prime is 2163671. The reversal of 2163653 is 3563612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2122849 + 40804 = 1457^2 + 202^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163653 - 2¹² = 2159557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081826 + 1081827.

It is an arithmetic number, because the mean of its divisors is an integer number (1081827).

2^2163653 is an apocalyptic number.

It is an amenable number.

2163653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163653 is an equidigital number, since it uses as much as digits as its factorization.

2163653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 2163653 is about 1470.9360965045. The cubic root of 2163653 is about 129.3389121187.

The spelling of 2163653 in words is "two million, one hundred sixty-three thousand, six hundred fifty-three".