287065249 has 3 divisors (see below), whose sum is σ = 287082193. Its totient is φ = 287048306.

The previous prime is 287065241. The next prime is 287065253. The reversal of 287065249 is 942560782.

The square root of 287065249 is 16943.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 287065249 - 2³ = 287065241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287065241) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8472 + ... + 25414.

Almost surely, 2^287065249 is an apocalyptic number.

287065249 is the 16943-rd square number.

287065249 is the 8472-nd centered octagonal number.

It is an amenable number.

287065249 is a deficient number, since it is larger than the sum of its proper divisors (16944).

287065249 is an frugal number, since it uses more digits than its factorization.

287065249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33886 (or 16943 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The cubic root of 287065249 is about 659.6702124973.

The spelling of 287065249 in words is "two hundred eighty-seven million, sixty-five thousand, two hundred forty-nine".