9649223766 has 384 divisors, whose sum is σ = 29474928000. Its totient is φ = 2308497408.

The previous prime is 9649223713. The next prime is 9649223803. The reversal of 9649223766 is 6673229469.

9649223766 is a `hidden beast` number, since 96 + 492 + 2 + 3 + 7 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 16957930 + ... + 16958498.

It is an arithmetic number, because the mean of its divisors is an integer number (76757625).

Almost surely, 2^9649223766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9649223766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14737464000).

9649223766 is an abundant number, since it is smaller than the sum of its proper divisors (19825704234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9649223766 is a wasteful number, since it uses less digits than its factorization.

9649223766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 640 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The square root of 9649223766 is about 98230.4625154539. The cubic root of 9649223766 is about 2128.9434514062.

The spelling of 9649223766 in words is "nine billion, six hundred forty-nine million, two hundred twenty-three thousand, seven hundred sixty-six".