287106087 has 4 divisors (see below), whose sum is σ = 382808120. Its totient is φ = 191404056.

The previous prime is 287106073. The next prime is 287106089. The reversal of 287106087 is 780601782.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 287106087 - 2⁶ = 287106023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287106089) 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 in 3 ways as a sum of consecutive naturals, for example, 47851012 + ... + 47851017.

It is an arithmetic number, because the mean of its divisors is an integer number (95702030).

Almost surely, 2^287106087 is an apocalyptic number.

287106087 is a deficient number, since it is larger than the sum of its proper divisors (95702033).

287106087 is an equidigital number, since it uses as much as digits as its factorization.

287106087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95702032.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 287106087 is about 16944.2051156140. The cubic root of 287106087 is about 659.7014926503.

The spelling of 287106087 in words is "two hundred eighty-seven million, one hundred six thousand, eighty-seven".