851606 has 16 divisors (see below), whose sum is σ = 1486080. Its totient is φ = 358440.

The previous prime is 851603. The next prime is 851623. The reversal of 851606 is 606158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851603) 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 7 ways as a sum of consecutive naturals, for example, 311 + ... + 1341.

It is an arithmetic number, because the mean of its divisors is an integer number (92880).

2⁸⁵¹⁶⁰⁶ is an apocalyptic number.

851606 is a deficient number, since it is larger than the sum of its proper divisors (634474).

851606 is a wasteful number, since it uses less digits than its factorization.

851606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 851606 is about 922.8250104977. The cubic root of 851606 is about 94.7864455094.

The spelling of 851606 in words is "eight hundred fifty-one thousand, six hundred six".