785643243 has 16 divisors (see below), whose sum is σ = 1306004736. Its totient is φ = 408126240.

The previous prime is 785643241. The next prime is 785643259. The reversal of 785643243 is 342346587.

It is not a de Polignac number, because 785643243 - 2¹ = 785643241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 785643195 and 785643204.

It is not an unprimeable number, because it can be changed into a prime (785643241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1700296 + ... + 1700757.

It is an arithmetic number, because the mean of its divisors is an integer number (81625296).

Almost surely, 2^785643243 is an apocalyptic number.

785643243 is a deficient number, since it is larger than the sum of its proper divisors (520361493).

785643243 is a wasteful number, since it uses less digits than its factorization.

785643243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401074.

The product of its digits is 483840, while the sum is 42.

The square root of 785643243 is about 28029.3282652296. The cubic root of 785643243 is about 922.7310322417.

The spelling of 785643243 in words is "seven hundred eighty-five million, six hundred forty-three thousand, two hundred forty-three".