66463141 has 2 divisors, whose sum is σ = 66463142. Its totient is φ = 66463140.

The previous prime is 66463127. The next prime is 66463207. The reversal of 66463141 is 14136466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48358116 + 18105025 = 6954^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 66463141 - 2²⁵ = 32908709 is a prime.

It is a super-2 number, since 2×66463141² = 8834698223171762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66463841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33231570 + 33231571.

It is an arithmetic number, because the mean of its divisors is an integer number (33231571).

Almost surely, 2^66463141 is an apocalyptic number.

It is an amenable number.

66463141 is a deficient number, since it is larger than the sum of its proper divisors (1).

66463141 is an equidigital number, since it uses as much as digits as its factorization.

66463141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 66463141 is about 8152.4929316130. The cubic root of 66463141 is about 405.0670843506.

The spelling of 66463141 in words is "sixty-six million, four hundred sixty-three thousand, one hundred forty-one".