9656687 has 4 divisors (see below), whose sum is σ = 9712680. Its totient is φ = 9600696.

The previous prime is 9656671. The next prime is 9656753. The reversal of 9656687 is 7866569.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7866569 = 29 ⋅271261.

It is a cyclic number.

It is not a de Polignac number, because 9656687 - 2⁴ = 9656671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9656627) 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, 27737 + ... + 28082.

It is an arithmetic number, because the mean of its divisors is an integer number (2428170).

Almost surely, 2^9656687 is an apocalyptic number.

9656687 is a deficient number, since it is larger than the sum of its proper divisors (55993).

9656687 is a wasteful number, since it uses less digits than its factorization.

9656687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55992.

The product of its digits is 544320, while the sum is 47.

The square root of 9656687 is about 3107.5210377405. The cubic root of 9656687 is about 212.9492190140.

The spelling of 9656687 in words is "nine million, six hundred fifty-six thousand, six hundred eighty-seven".