87879217487 has 8 divisors (see below), whose sum is σ = 92521359360. Its totient is φ = 83238767640.

The previous prime is 87879217417. The next prime is 87879217493. The reversal of 87879217487 is 78471297878.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87879217487 - 2²² = 87875023183 is a prime.

It is a super-2 number, since 2×87879217487² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87879217417) 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, 315689 + ... + 524802.

It is an arithmetic number, because the mean of its divisors is an integer number (11565169920).

Almost surely, 2^87879217487 is an apocalyptic number.

87879217487 is a deficient number, since it is larger than the sum of its proper divisors (4642141873).

87879217487 is a wasteful number, since it uses less digits than its factorization.

87879217487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846013.

The product of its digits is 88510464, while the sum is 68.

The spelling of 87879217487 in words is "eighty-seven billion, eight hundred seventy-nine million, two hundred seventeen thousand, four hundred eighty-seven".