811936 has 12 divisors (see below), whose sum is σ = 1598562. Its totient is φ = 405952.

The previous prime is 811933. The next prime is 811957. The reversal of 811936 is 639118.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 1936 = 900^2 + 44^2 .

It is not an unprimeable number, because it can be changed into a prime (811931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12655 + ... + 12718.

2⁸¹¹⁹³⁶ is an apocalyptic number.

It is an amenable number.

811936 is a deficient number, since it is larger than the sum of its proper divisors (786626).

811936 is a wasteful number, since it uses less digits than its factorization.

811936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25383 (or 25375 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 811936 is about 901.0749136448. The cubic root of 811936 is about 93.2911827812.

It can be divided in two parts, 81 and 1936, that multiplied together give a square (156816 = 396²).

The spelling of 811936 in words is "eight hundred eleven thousand, nine hundred thirty-six".