105663805 has 16 divisors (see below), whose sum is σ = 137015424. Its totient is φ = 77762880.

The previous prime is 105663793. The next prime is 105663809. The reversal of 105663805 is 508366501.

It is not a de Polignac number, because 105663805 - 2⁹ = 105663293 is a prime.

It is a super-2 number, since 2×105663805² = 22329679374156050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105663809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17602 + ... + 22828.

It is an arithmetic number, because the mean of its divisors is an integer number (8563464).

Almost surely, 2^105663805 is an apocalyptic number.

It is an amenable number.

105663805 is a deficient number, since it is larger than the sum of its proper divisors (31351619).

105663805 is a wasteful number, since it uses less digits than its factorization.

105663805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 105663805 is about 10279.2901019477. The cubic root of 105663805 is about 472.7614782213.

The spelling of 105663805 in words is "one hundred five million, six hundred sixty-three thousand, eight hundred five".