2086660145 has 4 divisors (see below), whose sum is σ = 2503992180. Its totient is φ = 1669328112.

The previous prime is 2086660117. The next prime is 2086660201. The reversal of 2086660145 is 5410666802.

2086660145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1396442161 + 690217984 = 37369^2 + 26272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2086660145 - 2¹⁰ = 2086659121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2086660099 and 2086660108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208666010 + ... + 208666019.

It is an arithmetic number, because the mean of its divisors is an integer number (625998045).

Almost surely, 2^2086660145 is an apocalyptic number.

It is an amenable number.

2086660145 is a deficient number, since it is larger than the sum of its proper divisors (417332035).

2086660145 is an equidigital number, since it uses as much as digits as its factorization.

2086660145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417332034.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2086660145 is about 45679.9753174189. The cubic root of 2086660145 is about 1277.8618570187.

The spelling of 2086660145 in words is "two billion, eighty-six million, six hundred sixty thousand, one hundred forty-five".