789617 has 4 divisors (see below), whose sum is σ = 810996. Its totient is φ = 768240.

The previous prime is 789611. The next prime is 789623. The reversal of 789617 is 716987.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (789611) and next prime (789623).

It can be written as a sum of positive squares in 2 ways, for example, as 758641 + 30976 = 871^2 + 176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-789617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (789611) 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, 10634 + ... + 10707.

It is an arithmetic number, because the mean of its divisors is an integer number (202749).

2⁷⁸⁹⁶¹⁷ is an apocalyptic number.

It is an amenable number.

789617 is a deficient number, since it is larger than the sum of its proper divisors (21379).

789617 is a wasteful number, since it uses less digits than its factorization.

789617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21378.

The product of its digits is 21168, while the sum is 38.

The square root of 789617 is about 888.6039612786. The cubic root of 789617 is about 92.4284130807.

The spelling of 789617 in words is "seven hundred eighty-nine thousand, six hundred seventeen".