867871487 has 24 divisors (see below), whose sum is σ = 1054892160. Its totient is φ = 711009600.

The previous prime is 867871481. The next prime is 867871541. The reversal of 867871487 is 784178768.

It is a happy number.

It is not a de Polignac number, because 867871487 - 2⁶ = 867871423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867871481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140498 + ... + 146544.

It is an arithmetic number, because the mean of its divisors is an integer number (43953840).

Almost surely, 2^867871487 is an apocalyptic number.

867871487 is a deficient number, since it is larger than the sum of its proper divisors (187020673).

867871487 is a wasteful number, since it uses less digits than its factorization.

867871487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6191 (or 6184 counting only the distinct ones).

The product of its digits is 4214784, while the sum is 56.

The square root of 867871487 is about 29459.6586368546. The cubic root of 867871487 is about 953.8611048076.

The spelling of 867871487 in words is "eight hundred sixty-seven million, eight hundred seventy-one thousand, four hundred eighty-seven".