66200443 has 2 divisors, whose sum is σ = 66200444. Its totient is φ = 66200442.

The previous prime is 66200429. The next prime is 66200447. The reversal of 66200443 is 34400266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66200443 - 2⁵ = 66200411 is a prime.

It is equal to p_3907330 and since 66200443 and 3907330 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (66200447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33100221 + 33100222.

It is an arithmetic number, because the mean of its divisors is an integer number (33100222).

Almost surely, 2^66200443 is an apocalyptic number.

66200443 is a deficient number, since it is larger than the sum of its proper divisors (1).

66200443 is an equidigital number, since it uses as much as digits as its factorization.

66200443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 66200443 is about 8136.3654662263. The cubic root of 66200443 is about 404.5326988407.

The spelling of 66200443 in words is "sixty-six million, two hundred thousand, four hundred forty-three".