84597984 has 144 divisors (see below), whose sum is σ = 262171728. Its totient is φ = 25767936.

The previous prime is 84597943. The next prime is 84598043. The reversal of 84597984 is 48979548.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 84597984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180919 + ... + 181385.

It is an arithmetic number, because the mean of its divisors is an integer number (1820637).

Almost surely, 2^84597984 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 84597984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131085864).

84597984 is an abundant number, since it is smaller than the sum of its proper divisors (177573744).

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

84597984 is a wasteful number, since it uses less digits than its factorization.

84597984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 526 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 84597984 is about 9197.7162382844. The cubic root of 84597984 is about 438.9886966681.

The spelling of 84597984 in words is "eighty-four million, five hundred ninety-seven thousand, nine hundred eighty-four".