9766644331 has 4 divisors (see below), whose sum is σ = 10103425200. Its totient is φ = 9429863464.

The previous prime is 9766644289. The next prime is 9766644359. The reversal of 9766644331 is 1334466679.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9766644331 - 2¹⁵ = 9766611563 is a prime.

It is a super-2 number, since 2×9766644331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9766644131) 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, 168390391 + ... + 168390448.

It is an arithmetic number, because the mean of its divisors is an integer number (2525856300).

Almost surely, 2^9766644331 is an apocalyptic number.

9766644331 is a deficient number, since it is larger than the sum of its proper divisors (336780869).

9766644331 is a wasteful number, since it uses less digits than its factorization.

9766644331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336780868.

The product of its digits is 1959552, while the sum is 49.

The square root of 9766644331 is about 98826.3341979252. The cubic root of 9766644331 is about 2137.5443001021.

The spelling of 9766644331 in words is "nine billion, seven hundred sixty-six million, six hundred forty-four thousand, three hundred thirty-one".