866624145 has 16 divisors (see below), whose sum is σ = 1390721280. Its totient is φ = 460825344.

The previous prime is 866624123. The next prime is 866624149. The reversal of 866624145 is 541426668.

866624145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 866624145 - 2⁹ = 866623633 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 866624097 and 866624106.

It is not an unprimeable number, because it can be changed into a prime (866624149) 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, 80665 + ... + 90774.

It is an arithmetic number, because the mean of its divisors is an integer number (86920080).

Almost surely, 2^866624145 is an apocalyptic number.

It is an amenable number.

866624145 is a deficient number, since it is larger than the sum of its proper divisors (524097135).

866624145 is a wasteful number, since it uses less digits than its factorization.

866624145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171784.

The product of its digits is 276480, while the sum is 42.

The square root of 866624145 is about 29438.4806843016. The cubic root of 866624145 is about 953.4039090524.

The spelling of 866624145 in words is "eight hundred sixty-six million, six hundred twenty-four thousand, one hundred forty-five".