66000349 has 2 divisors, whose sum is σ = 66000350. Its totient is φ = 66000348.

The previous prime is 66000331. The next prime is 66000359. The reversal of 66000349 is 94300066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48511225 + 17489124 = 6965^2 + 4182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66000349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66000329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000174 + 33000175.

It is an arithmetic number, because the mean of its divisors is an integer number (33000175).

Almost surely, 2^66000349 is an apocalyptic number.

It is an amenable number.

66000349 is a deficient number, since it is larger than the sum of its proper divisors (1).

66000349 is an equidigital number, since it uses as much as digits as its factorization.

66000349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 66000349 is about 8124.0598840727. The cubic root of 66000349 is about 404.1247143805.

The spelling of 66000349 in words is "sixty-six million, three hundred forty-nine", and thus it is an aban number.