665055536 has 20 divisors (see below), whose sum is σ = 1289476992. Its totient is φ = 332287296.

The previous prime is 665055533. The next prime is 665055553. The reversal of 665055536 is 635550566.

665055536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 665055493 and 665055502.

It is not an unprimeable number, because it can be changed into a prime (665055533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8945 + ... + 37551.

Almost surely, 2^665055536 is an apocalyptic number.

It is an amenable number.

665055536 is a deficient number, since it is larger than the sum of its proper divisors (624421456).

665055536 is a wasteful number, since it uses less digits than its factorization.

665055536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30068 (or 30062 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 41.

The square root of 665055536 is about 25788.6706908286. The cubic root of 665055536 is about 872.8761709383.

The spelling of 665055536 in words is "six hundred sixty-five million, fifty-five thousand, five hundred thirty-six".