66146851 has 2 divisors, whose sum is σ = 66146852. Its totient is φ = 66146850.

The previous prime is 66146837. The next prime is 66146869. The reversal of 66146851 is 15864166.

66146851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66146851 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66146851.

It is not a weakly prime, because it can be changed into another prime (66146891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33073425 + 33073426.

It is an arithmetic number, because the mean of its divisors is an integer number (33073426).

Almost surely, 2^66146851 is an apocalyptic number.

66146851 is a deficient number, since it is larger than the sum of its proper divisors (1).

66146851 is an equidigital number, since it uses as much as digits as its factorization.

66146851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 66146851 is about 8133.0714370403. The cubic root of 66146851 is about 404.4235073799.

The spelling of 66146851 in words is "sixty-six million, one hundred forty-six thousand, eight hundred fifty-one".