840060 has 72 divisors (see below), whose sum is σ = 2751840. Its totient is φ = 206208.

The previous prime is 840053. The next prime is 840061. The reversal of 840060 is 60048.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840061) by changing a digit.

840060 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2161 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (38220).

2⁸⁴⁰⁰⁶⁰ 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 840060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375920).

840060 is an abundant number, since it is smaller than the sum of its proper divisors (1911780).

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

840060 is a wasteful number, since it uses less digits than its factorization.

840060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 840060 is about 916.5478710902. The cubic root of 840060 is about 94.3561260738.

The spelling of 840060 in words is "eight hundred forty thousand, sixty".