665665001060 has 24 divisors (see below), whose sum is σ = 1430405725056. Its totient is φ = 260073767520.

The previous prime is 665665001051. The next prime is 665665001069. The reversal of 665665001060 is 60100566566.

It is an interprime number because it is at equal distance from previous prime (665665001051) and next prime (665665001069).

It is a super-2 number, since 2×665665001060² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665665000999 and 665665001017.

It is not an unprimeable number, because it can be changed into a prime (665665001069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387013676 + ... + 387015395.

It is an arithmetic number, because the mean of its divisors is an integer number (59600238544).

Almost surely, 2^665665001060 is an apocalyptic number.

It is an amenable number.

665665001060 is an abundant number, since it is smaller than the sum of its proper divisors (764740723996).

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

665665001060 is a wasteful number, since it uses less digits than its factorization.

665665001060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774029123 (or 774029121 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 665665001060 in words is "six hundred sixty-five billion, six hundred sixty-five million, one thousand, sixty".