285612065 has 16 divisors (see below), whose sum is σ = 357782160. Its totient is φ = 218661120.

The previous prime is 285612037. The next prime is 285612077. The reversal of 285612065 is 560216582.

It can be written as a sum of positive squares in 8 ways, for example, as 2430481 + 283181584 = 1559^2 + 16828^2 .

It is not a de Polignac number, because 285612065 - 2⁶ = 285612001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370 + ... + 23939.

It is an arithmetic number, because the mean of its divisors is an integer number (22361385).

Almost surely, 2^285612065 is an apocalyptic number.

It is an amenable number.

285612065 is a deficient number, since it is larger than the sum of its proper divisors (72170095).

285612065 is a wasteful number, since it uses less digits than its factorization.

285612065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25412.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 285612065 is about 16900.0610945641. The cubic root of 285612065 is about 658.5551996240. Note that the first 3 decimals are identical.

The spelling of 285612065 in words is "two hundred eighty-five million, six hundred twelve thousand, sixty-five".