84740 has 24 divisors (see below), whose sum is σ = 188160. Its totient is φ = 31968.

The previous prime is 84737. The next prime is 84751. The reversal of 84740 is 4748.

It is an Ulam 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, 269 + ... + 491.

It is an arithmetic number, because the mean of its divisors is an integer number (7840).

2⁸⁴⁷⁴⁰ 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 84740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94080).

84740 is an abundant number, since it is smaller than the sum of its proper divisors (103420).

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

84740 is a wasteful number, since it uses less digits than its factorization.

84740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 84740 is about 291.1013569189. The cubic root of 84740 is about 43.9234205141.

The spelling of 84740 in words is "eighty-four thousand, seven hundred forty".