9689687 has 4 divisors (see below), whose sum is σ = 11073936. Its totient is φ = 8305440.

The previous prime is 9689681. The next prime is 9689689. The reversal of 9689687 is 7869869.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7869869 = 7 ⋅1124267.

It is a cyclic number.

It is not a de Polignac number, because 9689687 - 2⁶ = 9689623 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 (9689681) 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, 692114 + ... + 692127.

It is an arithmetic number, because the mean of its divisors is an integer number (2768484).

Almost surely, 2^9689687 is an apocalyptic number.

9689687 is a deficient number, since it is larger than the sum of its proper divisors (1384249).

9689687 is a wasteful number, since it uses less digits than its factorization.

9689687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384248.

The product of its digits is 1306368, while the sum is 53.

The square root of 9689687 is about 3112.8262078054. The cubic root of 9689687 is about 213.1915151733.

The spelling of 9689687 in words is "nine million, six hundred eighty-nine thousand, six hundred eighty-seven".