87940630165 has 8 divisors (see below), whose sum is σ = 111736330200. Its totient is φ = 66214121472.

The previous prime is 87940630163. The next prime is 87940630181. The reversal of 87940630165 is 56103604978.

It can be written as a sum of positive squares in 4 ways, for example, as 6177802801 + 81762827364 = 78599^2 + 285942^2 .

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 87940630165 - 2¹ = 87940630163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87940630163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517297740 + ... + 517297909.

It is an arithmetic number, because the mean of its divisors is an integer number (13967041275).

Almost surely, 2^87940630165 is an apocalyptic number.

87940630165 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87940630165 is a deficient number, since it is larger than the sum of its proper divisors (23795700035).

87940630165 is a wasteful number, since it uses less digits than its factorization.

87940630165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034595671.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 87940630165 in words is "eighty-seven billion, nine hundred forty million, six hundred thirty thousand, one hundred sixty-five".