9640654344 has 80 divisors (see below), whose sum is σ = 27383209920. Its totient is φ = 3168275040.

The previous prime is 9640654337. The next prime is 9640654369. The reversal of 9640654344 is 4434560469.

9640654344 is a `hidden beast` number, since 9 + 64 + 0 + 6 + 543 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 9640654344.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58764 + ... + 150779.

It is an arithmetic number, because the mean of its divisors is an integer number (342290124).

Almost surely, 2^9640654344 is an apocalyptic number.

It is an amenable number.

9640654344 is an abundant number, since it is smaller than the sum of its proper divisors (17742555576).

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

9640654344 is a wasteful number, since it uses less digits than its factorization.

9640654344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209632 (or 209619 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The square root of 9640654344 is about 98186.8338627945. The cubic root of 9640654344 is about 2128.3130304625.

The spelling of 9640654344 in words is "nine billion, six hundred forty million, six hundred fifty-four thousand, three hundred forty-four".