840536 has 16 divisors (see below), whose sum is σ = 1630800. Its totient is φ = 405664.

The previous prime is 840523. The next prime is 840547. The reversal of 840536 is 635048.

840536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (101925).

2⁸⁴⁰⁵³⁶ is an apocalyptic number.

It is an amenable number.

840536 is a deficient number, since it is larger than the sum of its proper divisors (790264).

840536 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 12 representation: 840536 = (346508)₁₂.

840536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658 (or 3654 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 840536 is about 916.8075043323. The cubic root of 840536 is about 94.3739442596.

The spelling of 840536 in words is "eight hundred forty thousand, five hundred thirty-six".