84665856 has 80 divisors (see below), whose sum is σ = 246109248. Its totient is φ = 25651200.

The previous prime is 84665849. The next prime is 84665923. The reversal of 84665856 is 65856648.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14391 + ... + 19401.

Almost surely, 2^84665856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84665856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123054624).

84665856 is an abundant number, since it is smaller than the sum of its proper divisors (161443392).

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

84665856 is a wasteful number, since it uses less digits than its factorization.

84665856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043 (or 5027 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 84665856 is about 9201.4051100905. The cubic root of 84665856 is about 439.1060638318.

The spelling of 84665856 in words is "eighty-four million, six hundred sixty-five thousand, eight hundred fifty-six".