43686045 has 48 divisors (see below), whose sum is σ = 83144880. Its totient is φ = 21086208.

The previous prime is 43686029. The next prime is 43686079. The reversal of 43686045 is 54068634.

43686045 is a `hidden beast` number, since 43 + 6 + 8 + 604 + 5 = 666.

43686045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 9603801 + 34082244 = 3099^2 + 5838^2 .

It is not a de Polignac number, because 43686045 - 2⁴ = 43686029 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 30301 + ... + 31709.

It is an arithmetic number, because the mean of its divisors is an integer number (1732185).

Almost surely, 2^43686045 is an apocalyptic number.

43686045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43686045 is a deficient number, since it is larger than the sum of its proper divisors (39458835).

43686045 is a wasteful number, since it uses less digits than its factorization.

43686045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 43686045 is about 6609.5419659762. The cubic root of 43686045 is about 352.1931538264.

The spelling of 43686045 in words is "forty-three million, six hundred eighty-six thousand, forty-five".