87671617678 has 8 divisors (see below), whose sum is σ = 131512116960. Its totient is φ = 43834245360.

The previous prime is 87671617633. The next prime is 87671617687.

87671617678 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×87671617678² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 710343 + ... + 824578.

It is an arithmetic number, because the mean of its divisors is an integer number (16439014620).

Almost surely, 2^87671617678 is an apocalyptic number.

87671617678 is a deficient number, since it is larger than the sum of its proper divisors (43840499282).

87671617678 is a wasteful number, since it uses less digits than its factorization.

87671617678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563482.

The product of its digits is 33191424, while the sum is 64.

The spelling of 87671617678 in words is "eighty-seven billion, six hundred seventy-one million, six hundred seventeen thousand, six hundred seventy-eight".