1163653 has 2 divisors, whose sum is σ = 1163654. Its totient is φ = 1163652.

The previous prime is 1163651. The next prime is 1163663. The reversal of 1163653 is 3563611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613089 + 550564 = 783^2 + 742^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163653 - 2¹ = 1163651 is a prime.

Together with 1163651, it forms a pair of twin primes.

1163653 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581826 + 581827.

It is an arithmetic number, because the mean of its divisors is an integer number (581827).

2^1163653 is an apocalyptic number.

It is an amenable number.

1163653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163653 is an equidigital number, since it uses as much as digits as its factorization.

1163653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 1163653 is about 1078.7274910746. The cubic root of 1163653 is about 105.1819370261.

The spelling of 1163653 in words is "one million, one hundred sixty-three thousand, six hundred fifty-three".