66358141 has 2 divisors, whose sum is σ = 66358142. Its totient is φ = 66358140.

The previous prime is 66358109. The next prime is 66358147. The reversal of 66358141 is 14185366.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40896025 + 25462116 = 6395^2 + 5046^2 .

It is a cyclic number.

It is not a de Polignac number, because 66358141 - 2⁵ = 66358109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66358097 and 66358106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66358147) 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 as a sum of consecutive naturals, namely, 33179070 + 33179071.

It is an arithmetic number, because the mean of its divisors is an integer number (33179071).

Almost surely, 2^66358141 is an apocalyptic number.

It is an amenable number.

66358141 is a deficient number, since it is larger than the sum of its proper divisors (1).

66358141 is an equidigital number, since it uses as much as digits as its factorization.

66358141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 66358141 is about 8146.0506381927. The cubic root of 66358141 is about 404.8536604859.

The spelling of 66358141 in words is "sixty-six million, three hundred fifty-eight thousand, one hundred forty-one".