66550041 has 24 divisors (see below), whose sum is σ = 100414080. Its totient is φ = 42418656.

The previous prime is 66550037. The next prime is 66550069. The reversal of 66550041 is 14005566.

It is a happy number.

66550041 is a `hidden beast` number, since 6 + 655 + 0 + 0 + 4 + 1 = 666.

It is not a de Polignac number, because 66550041 - 2² = 66550037 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66549987 and 66550014.

It is not an unprimeable number, because it can be changed into a prime (66550021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26736 + ... + 29118.

It is an arithmetic number, because the mean of its divisors is an integer number (4183920).

Almost surely, 2^66550041 is an apocalyptic number.

It is an amenable number.

66550041 is a deficient number, since it is larger than the sum of its proper divisors (33864039).

66550041 is a wasteful number, since it uses less digits than its factorization.

66550041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 66550041 is about 8157.8208487316. The cubic root of 66550041 is about 405.2435480710.

The spelling of 66550041 in words is "sixty-six million, five hundred fifty thousand, forty-one".