851672 has 16 divisors (see below), whose sum is σ = 1652400. Its totient is φ = 411040.

The previous prime is 851671. The next prime is 851677. The reversal of 851672 is 276158.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 851672.

It is not an unprimeable number, because it can be changed into a prime (851671) 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, 1604 + ... + 2067.

It is an arithmetic number, because the mean of its divisors is an integer number (103275).

2⁸⁵¹⁶⁷² is an apocalyptic number.

It is an amenable number.

851672 is a deficient number, since it is larger than the sum of its proper divisors (800728).

851672 is a wasteful number, since it uses less digits than its factorization.

851672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706 (or 3702 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 851672 is about 922.8607695639. The cubic root of 851672 is about 94.7888941158.

The spelling of 851672 in words is "eight hundred fifty-one thousand, six hundred seventy-two".