840608 has 24 divisors (see below), whose sum is σ = 1677060. Its totient is φ = 414720.

The previous prime is 840601. The next prime is 840611. The reversal of 840608 is 806048.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 44944 = 892^2 + 212^2 .

It is not an unprimeable number, because it can be changed into a prime (840601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368 + ... + 3608.

2⁸⁴⁰⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

840608 is a deficient number, since it is larger than the sum of its proper divisors (836452).

840608 is a wasteful number, since it uses less digits than its factorization.

840608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 840608 is about 916.8467701857. The cubic root of 840608 is about 94.3766388616.

The spelling of 840608 in words is "eight hundred forty thousand, six hundred eight".