87818069 has 8 divisors (see below), whose sum is σ = 88704000. Its totient is φ = 86936976.

The previous prime is 87818033. The next prime is 87818089. The reversal of 87818069 is 96081878.

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 87818069 - 2²⁰ = 86769493 is a prime.

It is a super-3 number, since 3×87818069³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87818089) 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, 42932 + ... + 44930.

It is an arithmetic number, because the mean of its divisors is an integer number (11088000).

Almost surely, 2^87818069 is an apocalyptic number.

It is an amenable number.

87818069 is a deficient number, since it is larger than the sum of its proper divisors (885931).

87818069 is a wasteful number, since it uses less digits than its factorization.

87818069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 87818069 is about 9371.1295477120. The cubic root of 87818069 is about 444.4892832100.

The spelling of 87818069 in words is "eighty-seven million, eight hundred eighteen thousand, sixty-nine".