84065850 has 288 divisors, whose sum is σ = 277857216. Its totient is φ = 18662400.

The previous prime is 84065843. The next prime is 84065857. The reversal of 84065850 is 5856048.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84065843) and next prime (84065857).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84065857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2272032 + ... + 2272068.

It is an arithmetic number, because the mean of its divisors is an integer number (964782).

Almost surely, 2^84065850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84065850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138928608).

84065850 is an abundant number, since it is smaller than the sum of its proper divisors (193791366).

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

84065850 is a wasteful number, since it uses less digits than its factorization.

84065850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 84065850 is about 9168.7430981569. The cubic root of 84065850 is about 438.0663251034.

The spelling of 84065850 in words is "eighty-four million, sixty-five thousand, eight hundred fifty".