851366 has 8 divisors (see below), whose sum is σ = 1285200. Its totient is φ = 422968.

The previous prime is 851363. The next prime is 851381. The reversal of 851366 is 663158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (160650).

2⁸⁵¹³⁶⁶ is an apocalyptic number.

851366 is a deficient number, since it is larger than the sum of its proper divisors (433834).

851366 is a wasteful number, since it uses less digits than its factorization.

851366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718.

The product of its digits is 4320, while the sum is 29.

The square root of 851366 is about 922.6949658473. The cubic root of 851366 is about 94.7775404193. Note that the first 3 decimals are identical.

The spelling of 851366 in words is "eight hundred fifty-one thousand, three hundred sixty-six".