7217664330 has 192 divisors, whose sum is σ = 19553529600. Its totient is φ = 1698859008.

The previous prime is 7217664317. The next prime is 7217664353. The reversal of 7217664330 is 334667127.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36269571 + ... + 36269769.

It is an arithmetic number, because the mean of its divisors is an integer number (101841300).

Almost surely, 2^7217664330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7217664330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9776764800).

7217664330 is an abundant number, since it is smaller than the sum of its proper divisors (12335865270).

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

7217664330 is a wasteful number, since it uses less digits than its factorization.

7217664330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 7217664330 is about 84956.8380414431. The cubic root of 7217664330 is about 1932.5566205859.

The spelling of 7217664330 in words is "seven billion, two hundred seventeen million, six hundred sixty-four thousand, three hundred thirty".