855738 has 64 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 247104.

The previous prime is 855737. The next prime is 855739. The reversal of 855738 is 837558.

It is a happy number.

855738 is a `hidden beast` number, since 85 + 573 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (855737) and next prime (855739).

Its product of digits (33600) is a multiple of the sum of its prime factors (100).

It is not an unprimeable number, because it can be changed into a prime (855731) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16120 + ... + 16172.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2⁸⁵⁵⁷³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088640).

855738 is an abundant number, since it is smaller than the sum of its proper divisors (1321542).

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

855738 is a wasteful number, since it uses less digits than its factorization.

855738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 94 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 855738 is about 925.0610790645. The cubic root of 855738 is about 94.9394997985.

The spelling of 855738 in words is "eight hundred fifty-five thousand, seven hundred thirty-eight".