2065623066 has 64 divisors (see below), whose sum is σ = 4949159040. Its totient is φ = 634832640.

The previous prime is 2065623041. The next prime is 2065623089. The reversal of 2065623066 is 6603265602.

2065623066 is a `hidden beast` number, since 2 + 0 + 6 + 562 + 30 + 66 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2065623066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1101906 + ... + 1103778.

It is an arithmetic number, because the mean of its divisors is an integer number (77330610).

Almost surely, 2^2065623066 is an apocalyptic number.

2065623066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2065623066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2474579520).

2065623066 is an abundant number, since it is smaller than the sum of its proper divisors (2883535974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2065623066 is a wasteful number, since it uses less digits than its factorization.

2065623066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 2065623066 is about 45449.1261302129. The cubic root of 2065623066 is about 1273.5530047958.

Adding to 2065623066 its reverse (6603265602), we get a palindrome (8668888668).

It can be divided in two parts, 206562 and 3066, that added together give a triangular number (209628 = T₆₄₇).

The spelling of 2065623066 in words is "two billion, sixty-five million, six hundred twenty-three thousand, sixty-six".