7766728276 has 12 divisors (see below), whose sum is σ = 13651128820. Its totient is φ = 3866405760.

The previous prime is 7766728267. The next prime is 7766728289. The reversal of 7766728276 is 6728276677.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6859152400 + 907575876 = 82820^2 + 30126^2 .

It is a super-2 number, since 2×7766728276² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7766728276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4238565 + ... + 4240396.

Almost surely, 2^7766728276 is an apocalyptic number.

It is an amenable number.

7766728276 is a deficient number, since it is larger than the sum of its proper divisors (5884400544).

7766728276 is a wasteful number, since it uses less digits than its factorization.

7766728276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479194 (or 8479192 counting only the distinct ones).

The product of its digits is 16595712, while the sum is 58.

The square root of 7766728276 is about 88129.0433171721. The cubic root of 7766728276 is about 1980.3686246980.

The spelling of 7766728276 in words is "seven billion, seven hundred sixty-six million, seven hundred twenty-eight thousand, two hundred seventy-six".