7320666768 has 40 divisors (see below), whose sum is σ = 19372989216. Its totient is φ = 2380704000.

The previous prime is 7320666763. The next prime is 7320666781. The reversal of 7320666768 is 8676660237.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7320666768.

It is not an unprimeable number, because it can be changed into a prime (7320666763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1857958 + ... + 1861893.

Almost surely, 2^7320666768 is an apocalyptic number.

It is an amenable number.

7320666768 is an abundant number, since it is smaller than the sum of its proper divisors (12052322448).

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

7320666768 is a wasteful number, since it uses less digits than its factorization.

7320666768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719903 (or 3719897 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The square root of 7320666768 is about 85560.8950864821. The cubic root of 7320666768 is about 1941.7063288486.

The spelling of 7320666768 in words is "seven billion, three hundred twenty million, six hundred sixty-six thousand, seven hundred sixty-eight".