66804341 has 2 divisors, whose sum is σ = 66804342. Its totient is φ = 66804340.

The previous prime is 66804319. The next prime is 66804383. The reversal of 66804341 is 14340866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41654116 + 25150225 = 6454^2 + 5015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66804341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66804298 and 66804307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66804391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33402170 + 33402171.

It is an arithmetic number, because the mean of its divisors is an integer number (33402171).

Almost surely, 2^66804341 is an apocalyptic number.

It is an amenable number.

66804341 is a deficient number, since it is larger than the sum of its proper divisors (1).

66804341 is an equidigital number, since it uses as much as digits as its factorization.

66804341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 66804341 is about 8173.3922578083. The cubic root of 66804341 is about 405.7590621543.

The spelling of 66804341 in words is "sixty-six million, eight hundred four thousand, three hundred forty-one".