766297440648 has 48 divisors (see below), whose sum is σ = 2081659023600. Its totient is φ = 254660772960.

The previous prime is 766297440647. The next prime is 766297440677. The reversal of 766297440648 is 846044792667.

766297440648 is a `hidden beast` number, since 7 + 6 + 62 + 97 + 440 + 6 + 48 = 666.

It is a super-3 number, since 3×766297440648³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (766297440647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16053238 + ... + 16100901.

It is an arithmetic number, because the mean of its divisors is an integer number (43367896325).

Almost surely, 2^766297440648 is an apocalyptic number.

It is an amenable number.

766297440648 is an abundant number, since it is smaller than the sum of its proper divisors (1315361582952).

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

766297440648 is a wasteful number, since it uses less digits than its factorization.

766297440648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32154482 (or 32154475 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 63.

The spelling of 766297440648 in words is "seven hundred sixty-six billion, two hundred ninety-seven million, four hundred forty thousand, six hundred forty-eight".