82186656 has 24 divisors (see below), whose sum is σ = 215740224. Its totient is φ = 27395520.

The previous prime is 82186651. The next prime is 82186661. The reversal of 82186656 is 65668128.

It is an interprime number because it is at equal distance from previous prime (82186651) and next prime (82186661).

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (82186651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427960 + ... + 428151.

It is an arithmetic number, because the mean of its divisors is an integer number (8989176).

Almost surely, 2^82186656 is an apocalyptic number.

It is an amenable number.

82186656 is an abundant number, since it is smaller than the sum of its proper divisors (133553568).

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

82186656 is a wasteful number, since it uses less digits than its factorization.

82186656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856124 (or 856116 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 82186656 is about 9065.6856331995. The cubic root of 82186656 is about 434.7775424847. Note that the first 3 decimals are identical.

The spelling of 82186656 in words is "eighty-two million, one hundred eighty-six thousand, six hundred fifty-six".