86660844 has 12 divisors (see below), whose sum is σ = 202208664. Its totient is φ = 28886944.

The previous prime is 86660837. The next prime is 86660851. The reversal of 86660844 is 44806668.

It is an interprime number because it is at equal distance from previous prime (86660837) and next prime (86660851).

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 = 86660796 and 86660805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3610857 + ... + 3610880.

It is an arithmetic number, because the mean of its divisors is an integer number (16850722).

Almost surely, 2^86660844 is an apocalyptic number.

It is an amenable number.

86660844 is an abundant number, since it is smaller than the sum of its proper divisors (115547820).

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

86660844 is a wasteful number, since it uses less digits than its factorization.

86660844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221744 (or 7221742 counting only the distinct ones).

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

The square root of 86660844 is about 9309.1806298943. The cubic root of 86660844 is about 442.5282206139.

The spelling of 86660844 in words is "eighty-six million, six hundred sixty thousand, eight hundred forty-four".