86806644 has 12 divisors (see below), whose sum is σ = 202548864. Its totient is φ = 28935544.

The previous prime is 86806627. The next prime is 86806651. The reversal of 86806644 is 44660868.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 86806596 and 86806605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616932 + ... + 3616955.

It is an arithmetic number, because the mean of its divisors is an integer number (16879072).

Almost surely, 2^86806644 is an apocalyptic number.

It is an amenable number.

86806644 is an abundant number, since it is smaller than the sum of its proper divisors (115742220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86806644 is a wasteful number, since it uses less digits than its factorization.

86806644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233894 (or 7233892 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 86806644 is about 9317.0083181244. The cubic root of 86806644 is about 442.7762544501.

The spelling of 86806644 in words is "eighty-six million, eight hundred six thousand, six hundred forty-four".