84739620 has 288 divisors, whose sum is σ = 305665920. Its totient is φ = 17418240.

The previous prime is 84739619. The next prime is 84739663. The reversal of 84739620 is 2693748.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2066800 + ... + 2066840.

It is an arithmetic number, because the mean of its divisors is an integer number (1061340).

Almost surely, 2^84739620 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 84739620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152832960).

84739620 is an abundant number, since it is smaller than the sum of its proper divisors (220926300).

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

84739620 is a wasteful number, since it uses less digits than its factorization.

84739620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 84739620 is about 9205.4125382842. The cubic root of 84739620 is about 439.2335485868.

The spelling of 84739620 in words is "eighty-four million, seven hundred thirty-nine thousand, six hundred twenty".