105805712 has 10 divisors (see below), whose sum is σ = 204998598. Its totient is φ = 52902848.

The previous prime is 105805709. The next prime is 105805741. The reversal of 105805712 is 217508501.

It can be written as a sum of positive squares in only one way, i.e., 79138816 + 26666896 = 8896^2 + 5164^2 .

It is a super-2 number, since 2×105805712² = 22389697383653888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306413 + ... + 3306444.

Almost surely, 2^105805712 is an apocalyptic number.

It is an amenable number.

105805712 is a deficient number, since it is larger than the sum of its proper divisors (99192886).

105805712 is an equidigital number, since it uses as much as digits as its factorization.

105805712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612865 (or 6612859 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 105805712 is about 10286.1903540621. The cubic root of 105805712 is about 472.9730238628.

The spelling of 105805712 in words is "one hundred five million, eight hundred five thousand, seven hundred twelve".