84705600 has 168 divisors, whose sum is σ = 317731648. Its totient is φ = 19353600.

The previous prime is 84705589. The next prime is 84705601. The reversal of 84705600 is 650748.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84705601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32340 + ... + 34860.

Almost surely, 2^84705600 is an apocalyptic number.

84705600 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84705600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158865824).

84705600 is an abundant number, since it is smaller than the sum of its proper divisors (233026048).

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

84705600 is a wasteful number, since it uses less digits than its factorization.

84705600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 84705600 is about 9203.5645268559. The cubic root of 84705600 is about 439.1747617390.

The spelling of 84705600 in words is "eighty-four million, seven hundred five thousand, six hundred".