2065668443 has 8 divisors (see below), whose sum is σ = 2117434176. Its totient is φ = 2014072200.

The previous prime is 2065668439. The next prime is 2065668461. The reversal of 2065668443 is 3448665602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2065668443 - 2² = 2065668439 is a prime.

It is a super-2 number, since 2×2065668443² = 8533972232812088498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2065668394 and 2065668403.

It is not an unprimeable number, because it can be changed into a prime (2065661443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17513 + ... + 66618.

It is an arithmetic number, because the mean of its divisors is an integer number (264679272).

Almost surely, 2^2065668443 is an apocalyptic number.

2065668443 is a deficient number, since it is larger than the sum of its proper divisors (51765733).

2065668443 is an equidigital number, since it uses as much as digits as its factorization.

2065668443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84745.

The product of its (nonzero) digits is 829440, while the sum is 44.

The square root of 2065668443 is about 45449.6253339893. The cubic root of 2065668443 is about 1273.5623304068.

The spelling of 2065668443 in words is "two billion, sixty-five million, six hundred sixty-eight thousand, four hundred forty-three".