819712 has 20 divisors (see below), whose sum is σ = 1638846. Its totient is φ = 409600.

The previous prime is 819701. The next prime is 819719. The reversal of 819712 is 217918.

It can be written as a sum of positive squares in only one way, i.e., 430336 + 389376 = 656^2 + 624^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (819719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289 + ... + 1312.

2⁸¹⁹⁷¹² is an apocalyptic number.

It is an amenable number.

819712 is a deficient number, since it is larger than the sum of its proper divisors (819134).

819712 is an equidigital number, since it uses as much as digits as its factorization.

819712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1603 counting only the distinct ones).

The product of its digits is 1008, while the sum is 28.

The square root of 819712 is about 905.3794784509. The cubic root of 819712 is about 93.5880570147.

The spelling of 819712 in words is "eight hundred nineteen thousand, seven hundred twelve".