66020235 has 32 divisors (see below), whose sum is σ = 113799168. Its totient is φ = 32588160.

The previous prime is 66020203. The next prime is 66020243. The reversal of 66020235 is 53202066.

It is not a de Polignac number, because 66020235 - 2⁵ = 66020203 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7609 + ... + 13781.

It is an arithmetic number, because the mean of its divisors is an integer number (3556224).

Almost surely, 2^66020235 is an apocalyptic number.

66020235 is a deficient number, since it is larger than the sum of its proper divisors (47778933).

66020235 is a wasteful number, since it uses less digits than its factorization.

66020235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 66020235 is about 8125.2836873552. The cubic root of 66020235 is about 404.1652980906.

The spelling of 66020235 in words is "sixty-six million, twenty thousand, two hundred thirty-five".