9640887 has 16 divisors (see below), whose sum is σ = 14204160. Its totient is φ = 5785472.

The previous prime is 9640871. The next prime is 9640889. The reversal of 9640887 is 7880469.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9640887 - 2⁴ = 9640871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2937 + ... + 5282.

It is an arithmetic number, because the mean of its divisors is an integer number (887760).

Almost surely, 2^9640887 is an apocalyptic number.

9640887 is a deficient number, since it is larger than the sum of its proper divisors (4563273).

9640887 is a wasteful number, since it uses less digits than its factorization.

9640887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8262.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 9640887 is about 3104.9777776983. The cubic root of 9640887 is about 212.8330151044.

The spelling of 9640887 in words is "nine million, six hundred forty thousand, eight hundred eighty-seven".