785945 has 4 divisors (see below), whose sum is σ = 943140. Its totient is φ = 628752.

The previous prime is 785923. The next prime is 785947. The reversal of 785945 is 549587.

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

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 444889 = 584^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 785945 - 2¹⁸ = 523801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 785899 and 785908.

It is not an unprimeable number, because it can be changed into a prime (785947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78590 + ... + 78599.

It is an arithmetic number, because the mean of its divisors is an integer number (235785).

2⁷⁸⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

785945 is a deficient number, since it is larger than the sum of its proper divisors (157195).

785945 is a wasteful number, since it uses less digits than its factorization.

785945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157194.

The product of its digits is 50400, while the sum is 38.

The square root of 785945 is about 886.5353912845. The cubic root of 785945 is about 92.2849154095.

The spelling of 785945 in words is "seven hundred eighty-five thousand, nine hundred forty-five".