106666541 has 2 divisors, whose sum is σ = 106666542. Its totient is φ = 106666540.

The previous prime is 106666529. The next prime is 106666583. The reversal of 106666541 is 145666601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95140516 + 11526025 = 9754^2 + 3395^2 .

It is an emirp because it is prime and its reverse (145666601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106666541 - 2⁶ = 106666477 is a prime.

It is a super-2 number, since 2×106666541² = 22755501937809362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106666501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53333270 + 53333271.

It is an arithmetic number, because the mean of its divisors is an integer number (53333271).

Almost surely, 2^106666541 is an apocalyptic number.

It is an amenable number.

106666541 is a deficient number, since it is larger than the sum of its proper divisors (1).

106666541 is an equidigital number, since it uses as much as digits as its factorization.

106666541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 106666541 is about 10327.9495060733. The cubic root of 106666541 is about 474.2522543557.

The spelling of 106666541 in words is "one hundred six million, six hundred sixty-six thousand, five hundred forty-one".