9768661 has 4 divisors (see below), whose sum is σ = 11164192. Its totient is φ = 8373132.

The previous prime is 9768637. The next prime is 9768673. The reversal of 9768661 is 1668679.

9768661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9768661 - 2¹³ = 9760469 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 (9768061) 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, 697755 + ... + 697768.

It is an arithmetic number, because the mean of its divisors is an integer number (2791048).

Almost surely, 2^9768661 is an apocalyptic number.

9768661 is the 1805-th hex number.

It is an amenable number.

9768661 is a deficient number, since it is larger than the sum of its proper divisors (1395531).

9768661 is a wasteful number, since it uses less digits than its factorization.

9768661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395530.

The product of its digits is 108864, while the sum is 43.

The square root of 9768661 is about 3125.4857222518. The cubic root of 9768661 is about 213.7691413840.

The spelling of 9768661 in words is "nine million, seven hundred sixty-eight thousand, six hundred sixty-one".