851368 has 32 divisors (see below), whose sum is σ = 1906560. Its totient is φ = 348480.

The previous prime is 851363. The next prime is 851381. The reversal of 851368 is 863158.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851363) by changing a digit.

851368 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (59580).

2⁸⁵¹³⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953280).

851368 is an abundant number, since it is smaller than the sum of its proper divisors (1055192).

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

851368 is a wasteful number, since it uses less digits than its factorization.

851368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 693 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 851368 is about 922.6960496285. The cubic root of 851368 is about 94.7776146353. Note that the first 3 decimals are identical.

The spelling of 851368 in words is "eight hundred fifty-one thousand, three hundred sixty-eight".