855740 has 12 divisors (see below), whose sum is σ = 1797096. Its totient is φ = 342288.

The previous prime is 855739. The next prime is 855781. The reversal of 855740 is 47558.

It is a congruent number.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 21374 + ... + 21413.

It is an arithmetic number, because the mean of its divisors is an integer number (149758).

2⁸⁵⁵⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

855740 is an abundant number, since it is smaller than the sum of its proper divisors (941356).

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

855740 is a wasteful number, since it uses less digits than its factorization.

855740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42796 (or 42794 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 855740 is about 925.0621600736. The cubic root of 855740 is about 94.9395737615.

The spelling of 855740 in words is "eight hundred fifty-five thousand, seven hundred forty".