87715930 has 8 divisors (see below), whose sum is σ = 157888692. Its totient is φ = 35086368.

The previous prime is 87715919. The next prime is 87715939. The reversal of 87715930 is 3951778.

It can be written as a sum of positive squares in 2 ways, for example, as 81198121 + 6517809 = 9011^2 + 2553^2 .

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 (87715939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4385787 + ... + 4385806.

Almost surely, 2^87715930 is an apocalyptic number.

87715930 is a deficient number, since it is larger than the sum of its proper divisors (70172762).

87715930 is a wasteful number, since it uses less digits than its factorization.

87715930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8771600.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 87715930 is about 9365.6782989808. The cubic root of 87715930 is about 444.3168915679.

It can be divided in two parts, 877 and 15930, that added together give a 5-th power (16807 = 7⁵).

The spelling of 87715930 in words is "eighty-seven million, seven hundred fifteen thousand, nine hundred thirty".