87736865 has 8 divisors (see below), whose sum is σ = 105369768. Its totient is φ = 70132480.

The previous prime is 87736841. The next prime is 87736871. The reversal of 87736865 is 56863778.

It can be written as a sum of positive squares in 4 ways, for example, as 3225616 + 84511249 = 1796^2 + 9193^2 .

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

It is not a de Polignac number, because 87736865 - 2⁶ = 87736801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359 + ... + 13251.

It is an arithmetic number, because the mean of its divisors is an integer number (13171221).

Almost surely, 2^87736865 is an apocalyptic number.

It is an amenable number.

87736865 is a deficient number, since it is larger than the sum of its proper divisors (17632903).

87736865 is a wasteful number, since it uses less digits than its factorization.

87736865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14259.

The product of its digits is 1693440, while the sum is 50.

The square root of 87736865 is about 9366.7958769261. The cubic root of 87736865 is about 444.3522368551.

The spelling of 87736865 in words is "eighty-seven million, seven hundred thirty-six thousand, eight hundred sixty-five".