9704766640 has 20 divisors (see below), whose sum is σ = 22563582624. Its totient is φ = 3881906624.

The previous prime is 9704766619. The next prime is 9704766649. The reversal of 9704766640 is 466674079.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (9704766649) 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, 60654712 + ... + 60654871.

Almost surely, 2^9704766640 is an apocalyptic number.

It is an amenable number.

9704766640 is an abundant number, since it is smaller than the sum of its proper divisors (12858815984).

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

9704766640 is a wasteful number, since it uses less digits than its factorization.

9704766640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121309596 (or 121309590 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The square root of 9704766640 is about 98512.7739940359. The cubic root of 9704766640 is about 2133.0205142452.

The spelling of 9704766640 in words is "nine billion, seven hundred four million, seven hundred sixty-six thousand, six hundred forty".