855340 has 12 divisors (see below), whose sum is σ = 1796256. Its totient is φ = 342128.

The previous prime is 855331. The next prime is 855359. The reversal of 855340 is 43558.

It is a happy 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, 21364 + ... + 21403.

It is an arithmetic number, because the mean of its divisors is an integer number (149688).

2⁸⁵⁵³⁴⁰ is an apocalyptic number.

It is an amenable number.

855340 is an abundant number, since it is smaller than the sum of its proper divisors (940916).

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

855340 is a wasteful number, since it uses less digits than its factorization.

855340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42776 (or 42774 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 855340 is about 924.8459331153. The cubic root of 855340 is about 94.9247788673.

Adding to 855340 its reverse (43558), we get a palindrome (898898).

The spelling of 855340 in words is "eight hundred fifty-five thousand, three hundred forty".