287872867 has 2 divisors, whose sum is σ = 287872868. Its totient is φ = 287872866.

The previous prime is 287872841. The next prime is 287872873. The reversal of 287872867 is 768278782.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 287872867 - 2²³ = 279484259 is a prime.

It is not a weakly prime, because it can be changed into another prime (287812867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143936433 + 143936434.

It is an arithmetic number, because the mean of its divisors is an integer number (143936434).

Almost surely, 2^287872867 is an apocalyptic number.

287872867 is a deficient number, since it is larger than the sum of its proper divisors (1).

287872867 is an equidigital number, since it uses as much as digits as its factorization.

287872867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4214784, while the sum is 55.

The square root of 287872867 is about 16966.8166430831. The cubic root of 287872867 is about 660.2882632741.

The spelling of 287872867 in words is "two hundred eighty-seven million, eight hundred seventy-two thousand, eight hundred sixty-seven".