9664637 has 4 divisors (see below), whose sum is σ = 9889440. Its totient is φ = 9439836.

The previous prime is 9664631. The next prime is 9664651. The reversal of 9664637 is 7364669.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9664637 - 2⁴ = 9664621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9664594 and 9664603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664631) 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, 112337 + ... + 112422.

It is an arithmetic number, because the mean of its divisors is an integer number (2472360).

Almost surely, 2^9664637 is an apocalyptic number.

It is an amenable number.

9664637 is a deficient number, since it is larger than the sum of its proper divisors (224803).

9664637 is a wasteful number, since it uses less digits than its factorization.

9664637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224802.

The product of its digits is 163296, while the sum is 41.

The square root of 9664637 is about 3108.7999292331. The cubic root of 9664637 is about 213.0076407730.

Subtracting from 9664637 its reverse (7364669), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 9664 and 637, that added together give a palindrome (10301).

The spelling of 9664637 in words is "nine million, six hundred sixty-four thousand, six hundred thirty-seven".