805738 has 4 divisors (see below), whose sum is σ = 1208610. Its totient is φ = 402868.

The previous prime is 805729. The next prime is 805741. The reversal of 805738 is 837508.

805738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 734449 + 71289 = 857^2 + 267^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

805738 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, 201433 + ... + 201436.

2⁸⁰⁵⁷³⁸ is an apocalyptic number.

805738 is a deficient number, since it is larger than the sum of its proper divisors (402872).

805738 is a wasteful number, since it uses less digits than its factorization.

805738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402871.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 805738 is about 897.6290993501. The cubic root of 805738 is about 93.0531934485.

The spelling of 805738 in words is "eight hundred five thousand, seven hundred thirty-eight".