2662065021 has 32 divisors (see below), whose sum is σ = 4441107456. Its totient is φ = 1377936000.

The previous prime is 2662065001. The next prime is 2662065031. The reversal of 2662065021 is 1205602662.

It is not a de Polignac number, because 2662065021 - 2¹⁰ = 2662063997 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2662065021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2662065001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44406 + ... + 85416.

It is an arithmetic number, because the mean of its divisors is an integer number (138784608).

Almost surely, 2^2662065021 is an apocalyptic number.

2662065021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2662065021 is a deficient number, since it is larger than the sum of its proper divisors (1779042435).

2662065021 is a wasteful number, since it uses less digits than its factorization.

2662065021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41313.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2662065021 is about 51595.2034689272. The cubic root of 2662065021 is about 1385.9244387218.

Adding to 2662065021 its reverse (1205602662), we get a palindrome (3867667683).

The spelling of 2662065021 in words is "two billion, six hundred sixty-two million, sixty-five thousand, twenty-one".