6602266665 has 40 divisors (see below), whose sum is σ = 11868958728. Its totient is φ = 3511157760.

The previous prime is 6602266637. The next prime is 6602266667. The reversal of 6602266665 is 5666622066.

It can be written as a sum of positive squares in 4 ways, for example, as 1159811136 + 5442455529 = 34056^2 + 73773^2 .

It is not a de Polignac number, because 6602266665 - 2⁷ = 6602266537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6602266665.

It is not an unprimeable number, because it can be changed into a prime (6602266667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 119875 + ... + 166055.

Almost surely, 2^6602266665 is an apocalyptic number.

It is an amenable number.

6602266665 is a deficient number, since it is larger than the sum of its proper divisors (5266692063).

6602266665 is a wasteful number, since it uses less digits than its factorization.

6602266665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46551 (or 46542 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The square root of 6602266665 is about 81254.3332075281. Note that the first 3 decimals coincide. The cubic root of 6602266665 is about 1875.9921660975.

The spelling of 6602266665 in words is "six billion, six hundred two million, two hundred sixty-six thousand, six hundred sixty-five".