66062389 has 2 divisors, whose sum is σ = 66062390. Its totient is φ = 66062388.

The previous prime is 66062369. The next prime is 66062413. The reversal of 66062389 is 98326066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40640625 + 25421764 = 6375^2 + 5042^2 .

It is a cyclic number.

It is not a de Polignac number, because 66062389 - 2¹⁹ = 65538101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66062369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33031194 + 33031195.

It is an arithmetic number, because the mean of its divisors is an integer number (33031195).

Almost surely, 2^66062389 is an apocalyptic number.

It is an amenable number.

66062389 is a deficient number, since it is larger than the sum of its proper divisors (1).

66062389 is an equidigital number, since it uses as much as digits as its factorization.

66062389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 66062389 is about 8127.8772751562. The cubic root of 66062389 is about 404.2512997999.

The spelling of 66062389 in words is "sixty-six million, sixty-two thousand, three hundred eighty-nine".