85518787 has 8 divisors (see below), whose sum is σ = 88330176. Its totient is φ = 82744872.

The previous prime is 85518781. The next prime is 85518793. The reversal of 85518787 is 78781558.

It is an interprime number because it is at equal distance from previous prime (85518781) and next prime (85518793).

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 85518787 - 2³ = 85518779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85518787.

It is not an unprimeable number, because it can be changed into a prime (85518781) by changing a digit.

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, 4693 + ... + 13894.

It is an arithmetic number, because the mean of its divisors is an integer number (11041272).

Almost surely, 2^85518787 is an apocalyptic number.

85518787 is a deficient number, since it is larger than the sum of its proper divisors (2811389).

85518787 is a wasteful number, since it uses less digits than its factorization.

85518787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18737.

The product of its digits is 627200, while the sum is 49.

The square root of 85518787 is about 9247.6368332672. The cubic root of 85518787 is about 440.5756703960.

The spelling of 85518787 in words is "eighty-five million, five hundred eighteen thousand, seven hundred eighty-seven".