87631214617 has 8 divisors (see below), whose sum is σ = 88126568712. Its totient is φ = 87135984000.

The previous prime is 87631214603. The next prime is 87631214639. The reversal of 87631214617 is 71641213678.

It can be written as a sum of positive squares in 4 ways, for example, as 51322896 + 87579891721 = 7164^2 + 295939^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87631214617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87631214677) 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, 1649367 + ... + 1701667.

It is an arithmetic number, because the mean of its divisors is an integer number (11015821089).

Almost surely, 2^87631214617 is an apocalyptic number.

It is an amenable number.

87631214617 is a deficient number, since it is larger than the sum of its proper divisors (495354095).

87631214617 is a wasteful number, since it uses less digits than its factorization.

87631214617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61739.

The product of its digits is 338688, while the sum is 46.

The spelling of 87631214617 in words is "eighty-seven billion, six hundred thirty-one million, two hundred fourteen thousand, six hundred seventeen".