65528785 has 16 divisors (see below), whose sum is σ = 90000000. Its totient is φ = 44868096.

The previous prime is 65528759. The next prime is 65528819. The reversal of 65528785 is 58782556.

It is not a de Polignac number, because 65528785 - 2⁹ = 65528273 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 15 ways as a sum of consecutive naturals, for example, 42966 + ... + 44464.

It is an arithmetic number, because the mean of its divisors is an integer number (5625000).

Almost surely, 2^65528785 is an apocalyptic number.

It is an amenable number.

65528785 is a deficient number, since it is larger than the sum of its proper divisors (24471215).

65528785 is a wasteful number, since it uses less digits than its factorization.

65528785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its digits is 672000, while the sum is 46.

The square root of 65528785 is about 8094.9851760210. The cubic root of 65528785 is about 403.1599399638.

The spelling of 65528785 in words is "sixty-five million, five hundred twenty-eight thousand, seven hundred eighty-five".