766740768 has 48 divisors (see below), whose sum is σ = 2033468640. Its totient is φ = 252942336.

The previous prime is 766740757. The next prime is 766740791. The reversal of 766740768 is 867047667.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 766740768.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31858 + ... + 50481.

It is an arithmetic number, because the mean of its divisors is an integer number (42363930).

Almost surely, 2^766740768 is an apocalyptic number.

It is an amenable number.

766740768 is an abundant number, since it is smaller than the sum of its proper divisors (1266727872).

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

766740768 is a wasteful number, since it uses less digits than its factorization.

766740768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82449 (or 82441 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 51.

The square root of 766740768 is about 27690.0842902292. The cubic root of 766740768 is about 915.2706130212.

The spelling of 766740768 in words is "seven hundred sixty-six million, seven hundred forty thousand, seven hundred sixty-eight".