66129298 has 8 divisors (see below), whose sum is σ = 99228492. Its totient is φ = 33053136.

The previous prime is 66129289. The next prime is 66129373. The reversal of 66129298 is 89292166.

66129298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 63091249 + 3038049 = 7943^2 + 1743^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 7936 + ... + 13972.

Almost surely, 2^66129298 is an apocalyptic number.

66129298 is a deficient number, since it is larger than the sum of its proper divisors (33099194).

66129298 is a wasteful number, since it uses less digits than its factorization.

66129298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11516.

The product of its digits is 93312, while the sum is 43.

The square root of 66129298 is about 8131.9922528246. The cubic root of 66129298 is about 404.3877310542.

The spelling of 66129298 in words is "sixty-six million, one hundred twenty-nine thousand, two hundred ninety-eight".