840616 has 32 divisors (see below), whose sum is σ = 1909440. Its totient is φ = 338688.

The previous prime is 840611. The next prime is 840643. The reversal of 840616 is 616048.

840616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (59670).

2⁸⁴⁰⁶¹⁶ 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 840616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954720).

840616 is an abundant number, since it is smaller than the sum of its proper divisors (1068824).

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

840616 is a wasteful number, since it uses less digits than its factorization.

840616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 840616 is about 916.8511329545. The cubic root of 840616 is about 94.3769382524.

The spelling of 840616 in words is "eight hundred forty thousand, six hundred sixteen".