86653809 has 24 divisors (see below), whose sum is σ = 136936800. Its totient is φ = 52367040.

The previous prime is 86653807. The next prime is 86653817. The reversal of 86653809 is 90835668.

It is not a de Polignac number, because 86653809 - 2¹ = 86653807 is a prime.

It is a super-2 number, since 2×86653809² = 15017765228416962, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86653807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40437 + ... + 42525.

It is an arithmetic number, because the mean of its divisors is an integer number (5705700).

Almost surely, 2^86653809 is an apocalyptic number.

It is an amenable number.

86653809 is a deficient number, since it is larger than the sum of its proper divisors (50282991).

86653809 is a wasteful number, since it uses less digits than its factorization.

86653809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 86653809 is about 9308.8027694221. The cubic root of 86653809 is about 442.5162456929.

The spelling of 86653809 in words is "eighty-six million, six hundred fifty-three thousand, eight hundred nine".