66017485 has 16 divisors (see below), whose sum is σ = 82724400. Its totient is φ = 50512896.

The previous prime is 66017417. The next prime is 66017531. The reversal of 66017485 is 58471066.

It can be written as a sum of positive squares in 8 ways, for example, as 5597956 + 60419529 = 2366^2 + 7773^2 .

It is not a de Polignac number, because 66017485 - 2¹⁵ = 65984717 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 13717 + ... + 17893.

It is an arithmetic number, because the mean of its divisors is an integer number (5170275).

Almost surely, 2^66017485 is an apocalyptic number.

It is an amenable number.

66017485 is a deficient number, since it is larger than the sum of its proper divisors (16706915).

66017485 is a wasteful number, since it uses less digits than its factorization.

66017485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 66017485 is about 8125.1144607322. The cubic root of 66017485 is about 404.1596863262.

It can be divided in two parts, 660 and 17485, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 66017485 in words is "sixty-six million, seventeen thousand, four hundred eighty-five".