41206661 has 2 divisors, whose sum is σ = 41206662. Its totient is φ = 41206660.

The previous prime is 41206643. The next prime is 41206699. The reversal of 41206661 is 16660214.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39929761 + 1276900 = 6319^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 41206661 - 2¹⁴ = 41190277 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41206661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41206601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20603330 + 20603331.

It is an arithmetic number, because the mean of its divisors is an integer number (20603331).

Almost surely, 2^41206661 is an apocalyptic number.

It is an amenable number.

41206661 is a deficient number, since it is larger than the sum of its proper divisors (1).

41206661 is an equidigital number, since it uses as much as digits as its factorization.

41206661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 41206661 is about 6419.2414660924. The cubic root of 41206661 is about 345.4001127007.

Adding to 41206661 its reverse (16660214), we get a palindrome (57866875).

The spelling of 41206661 in words is "forty-one million, two hundred six thousand, six hundred sixty-one".