86808861 has 24 divisors (see below), whose sum is σ = 133228160. Its totient is φ = 55862352.

The previous prime is 86808857. The next prime is 86808893. The reversal of 86808861 is 16880868.

It is a happy number.

It is not a de Polignac number, because 86808861 - 2² = 86808857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86808811) 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 23 ways as a sum of consecutive naturals, for example, 20796 + ... + 24618.

Almost surely, 2^86808861 is an apocalyptic number.

It is an amenable number.

86808861 is a deficient number, since it is larger than the sum of its proper divisors (46419299).

86808861 is a wasteful number, since it uses less digits than its factorization.

86808861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890 (or 3855 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 86808861 is about 9317.1272933238. The cubic root of 86808861 is about 442.7800238489.

The spelling of 86808861 in words is "eighty-six million, eight hundred eight thousand, eight hundred sixty-one".