87671017870 has 16 divisors (see below), whose sum is σ = 157823542800. Its totient is φ = 35064915904.

The previous prime is 87671017867. The next prime is 87671017873. The reversal of 87671017870 is 7871017678.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87671017867) and next prime (87671017873).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87671017873) 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 7 ways as a sum of consecutive naturals, for example, 329695 + ... + 532954.

It is an arithmetic number, because the mean of its divisors is an integer number (9863971425).

Almost surely, 2^87671017870 is an apocalyptic number.

87671017870 is a deficient number, since it is larger than the sum of its proper divisors (70152524930).

87671017870 is a wasteful number, since it uses less digits than its factorization.

87671017870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872819.

The product of its (nonzero) digits is 921984, while the sum is 52.

The spelling of 87671017870 in words is "eighty-seven billion, six hundred seventy-one million, seventeen thousand, eight hundred seventy".