66011941 has 2 divisors, whose sum is σ = 66011942. Its totient is φ = 66011940.

The previous prime is 66011899. The next prime is 66012031. The reversal of 66011941 is 14911066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63138916 + 2873025 = 7946^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 66011941 - 2¹¹ = 66009893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66012941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33005970 + 33005971.

It is an arithmetic number, because the mean of its divisors is an integer number (33005971).

Almost surely, 2^66011941 is an apocalyptic number.

It is an amenable number.

66011941 is a deficient number, since it is larger than the sum of its proper divisors (1).

66011941 is an equidigital number, since it uses as much as digits as its factorization.

66011941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 66011941 is about 8124.7732891448. The cubic root of 66011941 is about 404.1483725355.

The spelling of 66011941 in words is "sixty-six million, eleven thousand, nine hundred forty-one".