86710644 has 36 divisors (see below), whose sum is σ = 228717216. Its totient is φ = 27646608.

The previous prime is 86710639. The next prime is 86710649. The reversal of 86710644 is 44601768.

86710644 is a `hidden beast` number, since 8 + 6 + 7 + 1 + 0 + 644 = 666.

It is an interprime number because it is at equal distance from previous prime (86710639) and next prime (86710649).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 86710599 and 86710608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86710649) 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 11 ways as a sum of consecutive naturals, for example, 51534 + ... + 53189.

It is an arithmetic number, because the mean of its divisors is an integer number (6353256).

Almost surely, 2^86710644 is an apocalyptic number.

It is an amenable number.

86710644 is an abundant number, since it is smaller than the sum of its proper divisors (142006572).

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

86710644 is a wasteful number, since it uses less digits than its factorization.

86710644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104756 (or 104751 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 86710644 is about 9311.8550246447. The cubic root of 86710644 is about 442.6129712515.

It can be divided in two parts, 867 and 10644, that added together give a palindrome (11511).

The spelling of 86710644 in words is "eighty-six million, seven hundred ten thousand, six hundred forty-four".