287606849 has 4 divisors (see below), whose sum is σ = 288179136. Its totient is φ = 287034564.

The previous prime is 287606821. The next prime is 287606909. The reversal of 287606849 is 948606782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 287606849 - 2²⁴ = 270829633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 287606797 and 287606806.

It is not an unprimeable number, because it can be changed into a prime (287606149) 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, 285389 + ... + 286394.

It is an arithmetic number, because the mean of its divisors is an integer number (72044784).

Almost surely, 2^287606849 is an apocalyptic number.

It is an amenable number.

287606849 is a deficient number, since it is larger than the sum of its proper divisors (572287).

287606849 is an equidigital number, since it uses as much as digits as its factorization.

287606849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572286.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 287606849 is about 16958.9754702340. The cubic root of 287606849 is about 660.0848138632.

The spelling of 287606849 in words is "two hundred eighty-seven million, six hundred six thousand, eight hundred forty-nine".