851612 has 6 divisors (see below), whose sum is σ = 1490328. Its totient is φ = 425804.

The previous prime is 851603. The next prime is 851623. The reversal of 851612 is 216158.

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 851612.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 106448 + ... + 106455.

It is an arithmetic number, because the mean of its divisors is an integer number (248388).

2⁸⁵¹⁶¹² is an apocalyptic number.

It is an amenable number.

851612 is a deficient number, since it is larger than the sum of its proper divisors (638716).

851612 is a wasteful number, since it uses less digits than its factorization.

851612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212907 (or 212905 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 851612 is about 922.8282613791. The cubic root of 851612 is about 94.7866681152.

The spelling of 851612 in words is "eight hundred fifty-one thousand, six hundred twelve".