105704561 has 4 divisors (see below), whose sum is σ = 105813732. Its totient is φ = 105595392.

The previous prime is 105704549. The next prime is 105704569. The reversal of 105704561 is 165407501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78872161 + 26832400 = 8881^2 + 5180^2 .

It is a cyclic number.

It is not a de Polignac number, because 105704561 - 2⁶ = 105704497 is a prime.

It is a super-2 number, since 2×105704561² = 22346908432405442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105704569) 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, 53120 + ... + 55073.

It is an arithmetic number, because the mean of its divisors is an integer number (26453433).

Almost surely, 2^105704561 is an apocalyptic number.

It is an amenable number.

105704561 is a deficient number, since it is larger than the sum of its proper divisors (109171).

105704561 is an equidigital number, since it uses as much as digits as its factorization.

105704561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109170.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 105704561 is about 10281.2723434408. The cubic root of 105704561 is about 472.8222539683.

The spelling of 105704561 in words is "one hundred five million, seven hundred four thousand, five hundred sixty-one".