66582841 has 8 divisors (see below), whose sum is σ = 72103304. Its totient is φ = 61119360.

The previous prime is 66582839. The next prime is 66582847. The reversal of 66582841 is 14828566.

It can be written as a sum of positive squares in 4 ways, for example, as 9126441 + 57456400 = 3021^2 + 7580^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66582841 - 2¹ = 66582839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66582794 and 66582803.

It is not an unprimeable number, because it can be changed into a prime (66582847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11796 + ... + 16501.

It is an arithmetic number, because the mean of its divisors is an integer number (9012913).

Almost surely, 2^66582841 is an apocalyptic number.

It is an amenable number.

66582841 is a deficient number, since it is larger than the sum of its proper divisors (5520463).

66582841 is a wasteful number, since it uses less digits than its factorization.

66582841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28491.

The product of its digits is 92160, while the sum is 40.

The square root of 66582841 is about 8159.8309418762. The cubic root of 66582841 is about 405.3101135460.

The spelling of 66582841 in words is "sixty-six million, five hundred eighty-two thousand, eight hundred forty-one".