287085212065 has 8 divisors (see below), whose sum is σ = 347662826280. Its totient is φ = 227561121792.

The previous prime is 287085212053. The next prime is 287085212069. The reversal of 287085212065 is 560212580782.

It can be written as a sum of positive squares in 4 ways, for example, as 150785432721 + 136299779344 = 388311^2 + 369188^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 287085212065 - 2⁷ = 287085211937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287085212069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263380384 + ... + 263381473.

It is an arithmetic number, because the mean of its divisors is an integer number (43457853285).

Almost surely, 2^287085212065 is an apocalyptic number.

It is an amenable number.

287085212065 is a deficient number, since it is larger than the sum of its proper divisors (60577614215).

287085212065 is a wasteful number, since it uses less digits than its factorization.

287085212065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526761971.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 287085212065 in words is "two hundred eighty-seven billion, eighty-five million, two hundred twelve thousand, sixty-five".