87755865 has 8 divisors (see below), whose sum is σ = 140409408. Its totient is φ = 46803120.

The previous prime is 87755839. The next prime is 87755873. The reversal of 87755865 is 56855778.

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

It is not a de Polignac number, because 87755865 - 2¹⁴ = 87739481 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2925181 + ... + 2925210.

It is an arithmetic number, because the mean of its divisors is an integer number (17551176).

Almost surely, 2^87755865 is an apocalyptic number.

It is an amenable number.

87755865 is a deficient number, since it is larger than the sum of its proper divisors (52653543).

87755865 is a wasteful number, since it uses less digits than its factorization.

87755865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850399.

The product of its digits is 2352000, while the sum is 51.

The square root of 87755865 is about 9367.8100429076. The cubic root of 87755865 is about 444.3843103479.

The spelling of 87755865 in words is "eighty-seven million, seven hundred fifty-five thousand, eight hundred sixty-five".