86899685 has 8 divisors (see below), whose sum is σ = 105989496. Its totient is φ = 68379840.

The previous prime is 86899679. The next prime is 86899691. The reversal of 86899685 is 58699868.

It is a Cunningham number, because it is equal to 9322²+1.

It is an interprime number because it is at equal distance from previous prime (86899679) and next prime (86899691).

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 86899684 = 1^2 + 9322^2 .

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

It is not a de Polignac number, because 86899685 - 2⁶ = 86899621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142154 + ... + 142763.

It is an arithmetic number, because the mean of its divisors is an integer number (13248687).

Almost surely, 2^86899685 is an apocalyptic number.

It is an amenable number.

86899685 is a deficient number, since it is larger than the sum of its proper divisors (19089811).

86899685 is a wasteful number, since it uses less digits than its factorization.

86899685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284983.

The product of its digits is 7464960, while the sum is 59.

The square root of 86899685 is about 9322.0000536366. Note that the first 4 decimals coincide. The cubic root of 86899685 is about 442.9343899491.

The spelling of 86899685 in words is "eighty-six million, eight hundred ninety-nine thousand, six hundred eighty-five".