785971 has 4 divisors (see below), whose sum is σ = 796000. Its totient is φ = 775944.

The previous prime is 785963. The next prime is 786001. The reversal of 785971 is 179587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179587 = 47 ⋅3821.

It is a cyclic number.

It is not a de Polignac number, because 785971 - 2³ = 785963 is a prime.

It is an Ulam number.

It is a Duffinian number.

785971 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 785971.

It is not an unprimeable number, because it can be changed into a prime (785921) 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, 4896 + ... + 5053.

It is an arithmetic number, because the mean of its divisors is an integer number (199000).

2⁷⁸⁵⁹⁷¹ is an apocalyptic number.

785971 is a deficient number, since it is larger than the sum of its proper divisors (10029).

785971 is an equidigital number, since it uses as much as digits as its factorization.

785971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028.

The product of its digits is 17640, while the sum is 37.

The square root of 785971 is about 886.5500549884. The cubic root of 785971 is about 92.2859330300.

The spelling of 785971 in words is "seven hundred eighty-five thousand, nine hundred seventy-one".