785089 has 4 divisors (see below), whose sum is σ = 799956. Its totient is φ = 770224.

The previous prime is 785053. The next prime is 785093. The reversal of 785089 is 980587.

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 400689 + 384400 = 633^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 785089 - 2⁷ = 784961 is a prime.

It is a Duffinian number.

785089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (783089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7354 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (199989).

2⁷⁸⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

785089 is a deficient number, since it is larger than the sum of its proper divisors (14867).

785089 is a wasteful number, since it uses less digits than its factorization.

785089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14866.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 785089 is about 886.0524815156. The cubic root of 785089 is about 92.2513996698.

The spelling of 785089 in words is "seven hundred eighty-five thousand, eighty-nine".