2660020105 has 16 divisors (see below), whose sum is σ = 3233039040. Its totient is φ = 2100714048.

The previous prime is 2660020093. The next prime is 2660020109. The reversal of 2660020105 is 5010200662.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660020105 is a prime.

It is a super-2 number, since 2×2660020105² = 14151413918008422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2660020109) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 990094 + ... + 992776.

It is an arithmetic number, because the mean of its divisors is an integer number (202064940).

Almost surely, 2^2660020105 is an apocalyptic number.

It is an amenable number.

2660020105 is a deficient number, since it is larger than the sum of its proper divisors (573018935).

2660020105 is a wasteful number, since it uses less digits than its factorization.

2660020105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2660020105 is about 51575.3827421571. The cubic root of 2660020105 is about 1385.5694730546.

Adding to 2660020105 its reverse (5010200662), we get a palindrome (7670220767).

The spelling of 2660020105 in words is "two billion, six hundred sixty million, twenty thousand, one hundred five".