105655623 has 4 divisors (see below), whose sum is σ = 140874168. Its totient is φ = 70437080.

The previous prime is 105655621. The next prime is 105655639. The reversal of 105655623 is 326556501.

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

It is a cyclic number.

It is not a de Polignac number, because 105655623 - 2¹ = 105655621 is a prime.

It is a super-2 number, since 2×105655623² = 22326221343036258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105655621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17609268 + ... + 17609273.

It is an arithmetic number, because the mean of its divisors is an integer number (35218542).

Almost surely, 2^105655623 is an apocalyptic number.

105655623 is a deficient number, since it is larger than the sum of its proper divisors (35218545).

105655623 is an equidigital number, since it uses as much as digits as its factorization.

105655623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35218544.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 105655623 is about 10278.8921095612. The cubic root of 105655623 is about 472.7492752591.

The spelling of 105655623 in words is "one hundred five million, six hundred fifty-five thousand, six hundred twenty-three".