66529749 has 16 divisors (see below), whose sum is σ = 104215104. Its totient is φ = 37219200.

The previous prime is 66529717. The next prime is 66529819. The reversal of 66529749 is 94792566.

It is not a de Polignac number, because 66529749 - 2⁵ = 66529717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66529698 and 66529707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66529249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77112 + ... + 77969.

It is an arithmetic number, because the mean of its divisors is an integer number (6513444).

Almost surely, 2^66529749 is an apocalyptic number.

It is an amenable number.

66529749 is a deficient number, since it is larger than the sum of its proper divisors (37685355).

66529749 is a wasteful number, since it uses less digits than its factorization.

66529749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155108.

The product of its digits is 816480, while the sum is 48.

The square root of 66529749 is about 8156.5770394204. The cubic root of 66529749 is about 405.2023558198.

The spelling of 66529749 in words is "sixty-six million, five hundred twenty-nine thousand, seven hundred forty-nine".