829695665 has 4 divisors (see below), whose sum is σ = 995634804. Its totient is φ = 663756528.

The previous prime is 829695661. The next prime is 829695673. The reversal of 829695665 is 566596928.

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 224880016 + 604815649 = 14996^2 + 24593^2 .

It is a cyclic number.

It is not a de Polignac number, because 829695665 - 2² = 829695661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 829695665.

It is not an unprimeable number, because it can be changed into a prime (829695661) 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, 82969562 + ... + 82969571.

It is an arithmetic number, because the mean of its divisors is an integer number (248908701).

Almost surely, 2^829695665 is an apocalyptic number.

It is an amenable number.

829695665 is a deficient number, since it is larger than the sum of its proper divisors (165939139).

829695665 is a wasteful number, since it uses less digits than its factorization.

829695665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165939138.

The product of its digits is 6998400, while the sum is 56.

The square root of 829695665 is about 28804.4382864863. The cubic root of 829695665 is about 939.6647608689.

The spelling of 829695665 in words is "eight hundred twenty-nine million, six hundred ninety-five thousand, six hundred sixty-five".