9768639 has 8 divisors (see below), whose sum is σ = 13091760. Its totient is φ = 6478976.

The previous prime is 9768637. The next prime is 9768673. The reversal of 9768639 is 9368679.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9768639 - 2¹ = 9768637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9768637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7674 + ... + 8855.

It is an arithmetic number, because the mean of its divisors is an integer number (1636470).

Almost surely, 2^9768639 is an apocalyptic number.

9768639 is a deficient number, since it is larger than the sum of its proper divisors (3323121).

9768639 is a wasteful number, since it uses less digits than its factorization.

9768639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16729.

The product of its digits is 489888, while the sum is 48.

The square root of 9768639 is about 3125.4822027969. The cubic root of 9768639 is about 213.7689809074.

The spelling of 9768639 in words is "nine million, seven hundred sixty-eight thousand, six hundred thirty-nine".