105643361 has 4 divisors (see below), whose sum is σ = 106578372. Its totient is φ = 104708352.

The previous prime is 105643333. The next prime is 105643403. The reversal of 105643361 is 163346501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163346501 = 41 ⋅3984061.

It can be written as a sum of positive squares in 2 ways, for example, as 25200400 + 80442961 = 5020^2 + 8969^2 .

It is a cyclic number.

It is not a de Polignac number, because 105643361 - 2¹⁴ = 105626977 is a prime.

It is a super-2 number, since 2×105643361² = 22321039446752642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105643861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467336 + ... + 467561.

It is an arithmetic number, because the mean of its divisors is an integer number (26644593).

Almost surely, 2^105643361 is an apocalyptic number.

It is an amenable number.

105643361 is a deficient number, since it is larger than the sum of its proper divisors (935011).

105643361 is an equidigital number, since it uses as much as digits as its factorization.

105643361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935010.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 105643361 is about 10278.2956271942. The cubic root of 105643361 is about 472.7309860420.

Adding to 105643361 its reverse (163346501), we get a palindrome (268989862).

The spelling of 105643361 in words is "one hundred five million, six hundred forty-three thousand, three hundred sixty-one".