287106089 has 2 divisors, whose sum is σ = 287106090. Its totient is φ = 287106088.

The previous prime is 287106073. The next prime is 287106101. The reversal of 287106089 is 980601782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260273689 + 26832400 = 16133^2 + 5180^2 .

It is a cyclic number.

It is not a de Polignac number, because 287106089 - 2⁴ = 287106073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (287106059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143553044 + 143553045.

It is an arithmetic number, because the mean of its divisors is an integer number (143553045).

Almost surely, 2^287106089 is an apocalyptic number.

It is an amenable number.

287106089 is a deficient number, since it is larger than the sum of its proper divisors (1).

287106089 is an equidigital number, since it uses as much as digits as its factorization.

287106089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 287106089 is about 16944.2051746312. The cubic root of 287106089 is about 659.7014941822.

The spelling of 287106089 in words is "two hundred eighty-seven million, one hundred six thousand, eighty-nine".