66682429 has 4 divisors (see below), whose sum is σ = 72744480. Its totient is φ = 60620380.

The previous prime is 66682411. The next prime is 66682439. The reversal of 66682429 is 92428666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66682429 - 2²¹ = 64585277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66682439) 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 in 3 ways as a sum of consecutive naturals, for example, 3031009 + ... + 3031030.

It is an arithmetic number, because the mean of its divisors is an integer number (18186120).

Almost surely, 2^66682429 is an apocalyptic number.

It is an amenable number.

66682429 is a deficient number, since it is larger than the sum of its proper divisors (6062051).

66682429 is a wasteful number, since it uses less digits than its factorization.

66682429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062050.

The product of its digits is 248832, while the sum is 43.

The square root of 66682429 is about 8165.9309940753. The cubic root of 66682429 is about 405.5120870851.

The spelling of 66682429 in words is "sixty-six million, six hundred eighty-two thousand, four hundred twenty-nine".