805136 has 10 divisors (see below), whose sum is σ = 1559982. Its totient is φ = 402560.

The previous prime is 805121. The next prime is 805153. The reversal of 805136 is 631508.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 65536 = 860^2 + 256^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805136.

It is an unprimeable number.

805136 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25145 + ... + 25176.

2⁸⁰⁵¹³⁶ is an apocalyptic number.

It is an amenable number.

805136 is a deficient number, since it is larger than the sum of its proper divisors (754846).

805136 is a wasteful number, since it uses less digits than its factorization.

805136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50329 (or 50323 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 805136 is about 897.2937088824. The cubic root of 805136 is about 93.0300130518.

The spelling of 805136 in words is "eight hundred five thousand, one hundred thirty-six".