66158383 has 2 divisors, whose sum is σ = 66158384. Its totient is φ = 66158382.

The previous prime is 66158377. The next prime is 66158401. The reversal of 66158383 is 38385166.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66158383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66158683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33079191 + 33079192.

It is an arithmetic number, because the mean of its divisors is an integer number (33079192).

Almost surely, 2^66158383 is an apocalyptic number.

66158383 is a deficient number, since it is larger than the sum of its proper divisors (1).

66158383 is an equidigital number, since it uses as much as digits as its factorization.

66158383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 66158383 is about 8133.7803633981. The cubic root of 66158383 is about 404.4470083267.

The spelling of 66158383 in words is "sixty-six million, one hundred fifty-eight thousand, three hundred eighty-three".