66675383 has 2 divisors, whose sum is σ = 66675384. Its totient is φ = 66675382.

The previous prime is 66675361. The next prime is 66675421. The reversal of 66675383 is 38357666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66675383 - 2¹² = 66671287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66674383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33337691 + 33337692.

It is an arithmetic number, because the mean of its divisors is an integer number (33337692).

Almost surely, 2^66675383 is an apocalyptic number.

66675383 is a deficient number, since it is larger than the sum of its proper divisors (1).

66675383 is an equidigital number, since it uses as much as digits as its factorization.

66675383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 66675383 is about 8165.4995560590. The cubic root of 66675383 is about 405.4978037681.

The spelling of 66675383 in words is "sixty-six million, six hundred seventy-five thousand, three hundred eighty-three".