811652 has 12 divisors (see below), whose sum is σ = 1469580. Its totient is φ = 391776.

The previous prime is 811651. The next prime is 811667. The reversal of 811652 is 256118.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 470596 = 584^2 + 686^2 .

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (811651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3383 + ... + 3614.

It is an arithmetic number, because the mean of its divisors is an integer number (122465).

2⁸¹¹⁶⁵² is an apocalyptic number.

It is an amenable number.

811652 is a deficient number, since it is larger than the sum of its proper divisors (657928).

811652 is a wasteful number, since it uses less digits than its factorization.

811652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7030 (or 7028 counting only the distinct ones).

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

The square root of 811652 is about 900.9173103010. The cubic root of 811652 is about 93.2803043435.

The spelling of 811652 in words is "eight hundred eleven thousand, six hundred fifty-two".