665532441 has 24 divisors (see below), whose sum is σ = 1101057984. Its totient is φ = 379473120.

The previous prime is 665532407. The next prime is 665532443. The reversal of 665532441 is 144235566.

665532441 is a `hidden beast` number, since 66 + 553 + 2 + 4 + 41 = 666.

665532441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665532441 - 2²² = 661338137 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 665532396 and 665532405.

It is not an unprimeable number, because it can be changed into a prime (665532443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18111 + ... + 40731.

It is an arithmetic number, because the mean of its divisors is an integer number (45877416).

Almost surely, 2^665532441 is an apocalyptic number.

It is an amenable number.

665532441 is a deficient number, since it is larger than the sum of its proper divisors (435525543).

665532441 is a wasteful number, since it uses less digits than its factorization.

665532441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23101 (or 23098 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 665532441 is about 25797.9154390427. The cubic root of 665532441 is about 873.0847648196.

The spelling of 665532441 in words is "six hundred sixty-five million, five hundred thirty-two thousand, four hundred forty-one".