84381678 has 12 divisors (see below), whose sum is σ = 182827008. Its totient is φ = 28127220.

The previous prime is 84381673. The next prime is 84381683. The reversal of 84381678 is 87618348.

It is an interprime number because it is at equal distance from previous prime (84381673) and next prime (84381683).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84381673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2343918 + ... + 2343953.

It is an arithmetic number, because the mean of its divisors is an integer number (15235584).

Almost surely, 2^84381678 is an apocalyptic number.

84381678 is an abundant number, since it is smaller than the sum of its proper divisors (98445330).

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

84381678 is a wasteful number, since it uses less digits than its factorization.

84381678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687879 (or 4687876 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 84381678 is about 9185.9500325225. The cubic root of 84381678 is about 438.6142317395.

The spelling of 84381678 in words is "eighty-four million, three hundred eighty-one thousand, six hundred seventy-eight".