84840678 has 48 divisors (see below), whose sum is σ = 198774576. Its totient is φ = 25997760.

The previous prime is 84840653. The next prime is 84840697. The reversal of 84840678 is 87604848.

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, 71248 + ... + 72428.

It is an arithmetic number, because the mean of its divisors is an integer number (4141137).

Almost surely, 2^84840678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84840678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99387288).

84840678 is an abundant number, since it is smaller than the sum of its proper divisors (113933898).

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

84840678 is a wasteful number, since it uses less digits than its factorization.

84840678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 84840678 is about 9210.8999560304. The cubic root of 84840678 is about 439.4080849305.

The spelling of 84840678 in words is "eighty-four million, eight hundred forty thousand, six hundred seventy-eight".