87087818 has 8 divisors (see below), whose sum is σ = 131508900. Its totient is φ = 43251520.

The previous prime is 87087761. The next prime is 87087827. The reversal of 87087818 is 81878078.

It can be written as a sum of positive squares in 2 ways, for example, as 82391929 + 4695889 = 9077^2 + 2167^2 .

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

It is a super-2 number, since 2×87087818² = 15168576088002248, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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, 145823 + ... + 146418.

Almost surely, 2^87087818 is an apocalyptic number.

87087818 is a deficient number, since it is larger than the sum of its proper divisors (44421082).

87087818 is a wasteful number, since it uses less digits than its factorization.

87087818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292392.

The product of its (nonzero) digits is 200704, while the sum is 47.

The square root of 87087818 is about 9332.0854046671. The cubic root of 87087818 is about 443.2538023553.

It can be divided in two parts, 870 and 87818, that added together give a palindrome (88688).

The spelling of 87087818 in words is "eighty-seven million, eighty-seven thousand, eight hundred eighteen".