86803861 has 2 divisors, whose sum is σ = 86803862. Its totient is φ = 86803860.

The previous prime is 86803859. The next prime is 86803867. The reversal of 86803861 is 16830868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 7700625 = 8894^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 86803861 - 2¹ = 86803859 is a prime.

Together with 86803859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86803867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43401930 + 43401931.

It is an arithmetic number, because the mean of its divisors is an integer number (43401931).

Almost surely, 2^86803861 is an apocalyptic number.

It is an amenable number.

86803861 is a deficient number, since it is larger than the sum of its proper divisors (1).

86803861 is an equidigital number, since it uses as much as digits as its factorization.

86803861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 86803861 is about 9316.8589664114. The cubic root of 86803861 is about 442.7715226330.

The spelling of 86803861 in words is "eighty-six million, eight hundred three thousand, eight hundred sixty-one".