87218535 has 8 divisors (see below), whose sum is σ = 139549680. Its totient is φ = 46516544.

The previous prime is 87218533. The next prime is 87218539. The reversal of 87218535 is 53581278.

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 87218535 - 2¹ = 87218533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87218493 and 87218502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87218533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907270 + ... + 2907299.

It is an arithmetic number, because the mean of its divisors is an integer number (17443710).

Almost surely, 2^87218535 is an apocalyptic number.

87218535 is a deficient number, since it is larger than the sum of its proper divisors (52331145).

87218535 is a wasteful number, since it uses less digits than its factorization.

87218535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814577.

The product of its digits is 67200, while the sum is 39.

The square root of 87218535 is about 9339.0864114216. The cubic root of 87218535 is about 443.4754630630.

The spelling of 87218535 in words is "eighty-seven million, two hundred eighteen thousand, five hundred thirty-five".