66369829 has 2 divisors, whose sum is σ = 66369830. Its totient is φ = 66369828.

The previous prime is 66369767. The next prime is 66369841. The reversal of 66369829 is 92896366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59320804 + 7049025 = 7702^2 + 2655^2 .

It is a cyclic number.

It is not a de Polignac number, because 66369829 - 2¹¹ = 66367781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66369889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33184914 + 33184915.

It is an arithmetic number, because the mean of its divisors is an integer number (33184915).

Almost surely, 2^66369829 is an apocalyptic number.

It is an amenable number.

66369829 is a deficient number, since it is larger than the sum of its proper divisors (1).

66369829 is an equidigital number, since it uses as much as digits as its factorization.

66369829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 66369829 is about 8146.7680094624. The cubic root of 66369829 is about 404.8774287416.

The spelling of 66369829 in words is "sixty-six million, three hundred sixty-nine thousand, eight hundred twenty-nine".