287069 has 4 divisors (see below), whose sum is σ = 288444. Its totient is φ = 285696.

The previous prime is 287059. The next prime is 287087. The reversal of 287069 is 960782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960782 = 2 ⋅480391.

It can be written as a sum of positive squares in 2 ways, for example, as 156025 + 131044 = 395^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 287069 - 2⁸ = 286813 is a prime.

It is a super-2 number, since 2×287069² = 164817221522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287069.

It is not an unprimeable number, because it can be changed into a prime (287059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302 + ... + 815.

It is an arithmetic number, because the mean of its divisors is an integer number (72111).

2²⁸⁷⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

287069 is a deficient number, since it is larger than the sum of its proper divisors (1375).

287069 is a wasteful number, since it uses less digits than its factorization.

287069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 287069 is about 535.7882044241. The cubic root of 287069 is about 65.9673085726.

The spelling of 287069 in words is "two hundred eighty-seven thousand, sixty-nine".