66929698 has 24 divisors (see below), whose sum is σ = 111000204. Its totient is φ = 30243840.

The previous prime is 66929591. The next prime is 66929743. The reversal of 66929698 is 89692966.

66929698 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 66797929 + 131769 = 8173^2 + 363^2 .

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 11 ways as a sum of consecutive naturals, for example, 45990 + ... + 47422.

Almost surely, 2^66929698 is an apocalyptic number.

66929698 is a deficient number, since it is larger than the sum of its proper divisors (44070506).

66929698 is a wasteful number, since it uses less digits than its factorization.

66929698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1639 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 55.

The square root of 66929698 is about 8181.0572666374. The cubic root of 66929698 is about 406.0127031382.

The spelling of 66929698 in words is "sixty-six million, nine hundred twenty-nine thousand, six hundred ninety-eight".