66342429 has 8 divisors (see below), whose sum is σ = 98285120. Its totient is φ = 44228268.

The previous prime is 66342407. The next prime is 66342431. The reversal of 66342429 is 92424366.

It is not a de Polignac number, because 66342429 - 2⁷ = 66342301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66342393 and 66342402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66342499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1228537 + ... + 1228590.

It is an arithmetic number, because the mean of its divisors is an integer number (12285640).

Almost surely, 2^66342429 is an apocalyptic number.

It is an amenable number.

66342429 is a deficient number, since it is larger than the sum of its proper divisors (31942691).

66342429 is a wasteful number, since it uses less digits than its factorization.

66342429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457136 (or 2457130 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 66342429 is about 8145.0861873893. The cubic root of 66342429 is about 404.8217047845.

The spelling of 66342429 in words is "sixty-six million, three hundred forty-two thousand, four hundred twenty-nine".