862871013 has 12 divisors (see below), whose sum is σ = 1300559520. Its totient is φ = 550236456.

The previous prime is 862871003. The next prime is 862871063. The reversal of 862871013 is 310178268.

862871013 is a `hidden beast` number, since 8 + 628 + 7 + 10 + 13 = 666.

It is not a de Polignac number, because 862871013 - 2¹⁰ = 862869989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862871003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2084023 + ... + 2084436.

It is an arithmetic number, because the mean of its divisors is an integer number (108379960).

Almost surely, 2^862871013 is an apocalyptic number.

It is an amenable number.

862871013 is a deficient number, since it is larger than the sum of its proper divisors (437688507).

862871013 is a wasteful number, since it uses less digits than its factorization.

862871013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168488 (or 4168485 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 862871013 is about 29374.6661768266. Note that the first 3 decimals coincide. The cubic root of 862871013 is about 952.0255996253.

The spelling of 862871013 in words is "eight hundred sixty-two million, eight hundred seventy-one thousand, thirteen".