775766648 has 16 divisors (see below), whose sum is σ = 1454952480. Its totient is φ = 387779328.

The previous prime is 775766647. The next prime is 775766653. The reversal of 775766648 is 846667577.

775766648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 775766593 and 775766602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775766647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25361 + ... + 46847.

It is an arithmetic number, because the mean of its divisors is an integer number (90934530).

Almost surely, 2^775766648 is an apocalyptic number.

It is an amenable number.

775766648 is a deficient number, since it is larger than the sum of its proper divisors (679185832).

775766648 is a wasteful number, since it uses less digits than its factorization.

775766648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26006 (or 26002 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 56.

The square root of 775766648 is about 27852.5878151385. The cubic root of 775766648 is about 918.8480572960.

The spelling of 775766648 in words is "seven hundred seventy-five million, seven hundred sixty-six thousand, six hundred forty-eight".