87684163642 has 8 divisors (see below), whose sum is σ = 131532893856. Its totient is φ = 43839865692.

The previous prime is 87684163627. The next prime is 87684163649. The reversal of 87684163642 is 24636148678.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (87684163649) 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, 1058158 + ... + 1138009.

It is an arithmetic number, because the mean of its divisors is an integer number (16441611732).

Almost surely, 2^87684163642 is an apocalyptic number.

87684163642 is a deficient number, since it is larger than the sum of its proper divisors (43848730214).

87684163642 is a wasteful number, since it uses less digits than its factorization.

87684163642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216132.

The product of its digits is 9289728, while the sum is 55.

The spelling of 87684163642 in words is "eighty-seven billion, six hundred eighty-four million, one hundred sixty-three thousand, six hundred forty-two".