287047 has 2 divisors, whose sum is σ = 287048. Its totient is φ = 287046.

The previous prime is 287003. The next prime is 287057. The reversal of 287047 is 740782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 287047 - 2¹⁵ = 254279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143523 + 143524.

It is an arithmetic number, because the mean of its divisors is an integer number (143524).

2²⁸⁷⁰⁴⁷ is an apocalyptic number.

287047 is a deficient number, since it is larger than the sum of its proper divisors (1).

287047 is an equidigital number, since it uses as much as digits as its factorization.

287047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 287047 is about 535.7676735302. The cubic root of 287047 is about 65.9656233588.

The spelling of 287047 in words is "two hundred eighty-seven thousand, forty-seven".