862866487 has 4 divisors (see below), whose sum is σ = 986133136. Its totient is φ = 739599840.

The previous prime is 862866469. The next prime is 862866491. The reversal of 862866487 is 784668268.

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

It is not a de Polignac number, because 862866487 - 2¹⁹ = 862342199 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 (862866887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61633314 + ... + 61633327.

It is an arithmetic number, because the mean of its divisors is an integer number (246533284).

Almost surely, 2^862866487 is an apocalyptic number.

862866487 is a deficient number, since it is larger than the sum of its proper divisors (123266649).

862866487 is a wasteful number, since it uses less digits than its factorization.

862866487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123266648.

The product of its digits is 6193152, while the sum is 55.

The square root of 862866487 is about 29374.5891375522. The cubic root of 862866487 is about 952.0239350754.

The spelling of 862866487 in words is "eight hundred sixty-two million, eight hundred sixty-six thousand, four hundred eighty-seven".