66700441 has 2 divisors, whose sum is σ = 66700442. Its totient is φ = 66700440.

The previous prime is 66700429. The next prime is 66700451. The reversal of 66700441 is 14400766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37161216 + 29539225 = 6096^2 + 5435^2 .

It is a cyclic number.

It is not a de Polignac number, because 66700441 - 2¹¹ = 66698393 is a prime.

It is not a weakly prime, because it can be changed into another prime (66700421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33350220 + 33350221.

It is an arithmetic number, because the mean of its divisors is an integer number (33350221).

Almost surely, 2^66700441 is an apocalyptic number.

It is an amenable number.

66700441 is a deficient number, since it is larger than the sum of its proper divisors (1).

66700441 is an equidigital number, since it uses as much as digits as its factorization.

66700441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 66700441 is about 8167.0337944691. The cubic root of 66700441 is about 405.5485955840.

The spelling of 66700441 in words is "sixty-six million, seven hundred thousand, four hundred forty-one".