287885065 has 16 divisors (see below), whose sum is σ = 384039936. Its totient is φ = 205732800.

The previous prime is 287885053. The next prime is 287885069. The reversal of 287885065 is 560588782.

It is a happy number.

It is not a de Polignac number, because 287885065 - 2⁵ = 287885033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287885069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69421 + ... + 73450.

It is an arithmetic number, because the mean of its divisors is an integer number (24002496).

Almost surely, 2^287885065 is an apocalyptic number.

It is an amenable number.

287885065 is a deficient number, since it is larger than the sum of its proper divisors (96154871).

287885065 is a wasteful number, since it uses less digits than its factorization.

287885065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142920.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The square root of 287885065 is about 16967.1761056459. The cubic root of 287885065 is about 660.2975892456.

The spelling of 287885065 in words is "two hundred eighty-seven million, eight hundred eighty-five thousand, sixty-five".