9691643 has 6 divisors (see below), whose sum is σ = 10494684. Its totient is φ = 8945976.

The previous prime is 9691639. The next prime is 9691673. The reversal of 9691643 is 3461969.

It is not a de Polignac number, because 9691643 - 2² = 9691639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9691597 and 9691606.

It is not an unprimeable number, because it can be changed into a prime (9691673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28505 + ... + 28842.

It is an arithmetic number, because the mean of its divisors is an integer number (1749114).

Almost surely, 2^9691643 is an apocalyptic number.

9691643 is a deficient number, since it is larger than the sum of its proper divisors (803041).

9691643 is a wasteful number, since it uses less digits than its factorization.

9691643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57373 (or 57360 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 9691643 is about 3113.1403758906. The cubic root of 9691643 is about 213.2058594463.

The spelling of 9691643 in words is "nine million, six hundred ninety-one thousand, six hundred forty-three".