965696661 has 20 divisors (see below), whose sum is σ = 1464123232. Its totient is φ = 634185288.

The previous prime is 965696651. The next prime is 965696663. The reversal of 965696661 is 166696569.

It is a happy number.

It is not a de Polignac number, because 965696661 - 2⁵ = 965696629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 965696598 and 965696607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (965696663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 83545 + ... + 94398.

Almost surely, 2^965696661 is an apocalyptic number.

It is an amenable number.

965696661 is a deficient number, since it is larger than the sum of its proper divisors (498426571).

965696661 is a wasteful number, since it uses less digits than its factorization.

965696661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178022 (or 178013 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 965696661 is about 31075.6602665173. The cubic root of 965696661 is about 988.4322569578.

The spelling of 965696661 in words is "nine hundred sixty-five million, six hundred ninety-six thousand, six hundred sixty-one".