805726 has 4 divisors (see below), whose sum is σ = 1208592. Its totient is φ = 402862.

The previous prime is 805723. The next prime is 805729. The reversal of 805726 is 627508.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (805723) and next prime (805729).

It is a junction number, because it is equal to n+sod(n) for n = 805694 and 805703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201430 + ... + 201433.

It is an arithmetic number, because the mean of its divisors is an integer number (302148).

2⁸⁰⁵⁷²⁶ is an apocalyptic number.

805726 is a deficient number, since it is larger than the sum of its proper divisors (402866).

805726 is a wasteful number, since it uses less digits than its factorization.

805726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402865.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 805726 is about 897.6224150499. The cubic root of 805726 is about 93.0527314935.

The spelling of 805726 in words is "eight hundred five thousand, seven hundred twenty-six".