766648737793 has 8 divisors (see below), whose sum is σ = 767619314280. Its totient is φ = 765678672000.

The previous prime is 766648737769. The next prime is 766648737797. The reversal of 766648737793 is 397737846667.

It can be written as a sum of positive squares in 4 ways, for example, as 314892689409 + 451756048384 = 561153^2 + 672128^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 766648737793 - 2⁵ = 766648737761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766648737797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2922543 + ... + 3174043.

It is an arithmetic number, because the mean of its divisors is an integer number (95952414285).

Almost surely, 2^766648737793 is an apocalyptic number.

It is an amenable number.

766648737793 is a deficient number, since it is larger than the sum of its proper divisors (970576487).

766648737793 is a wasteful number, since it uses less digits than its factorization.

766648737793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255347.

The product of its digits is 1344252672, while the sum is 73.

The spelling of 766648737793 in words is "seven hundred sixty-six billion, six hundred forty-eight million, seven hundred thirty-seven thousand, seven hundred ninety-three".