7648118866 has 4 divisors (see below), whose sum is σ = 11472178302. Its totient is φ = 3824059432.

The previous prime is 7648118857. The next prime is 7648118867. The reversal of 7648118866 is 6688118467.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7646628025 + 1490841 = 87445^2 + 1221^2 .

It is not an unprimeable number, because it can be changed into a prime (7648118867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1912029715 + ... + 1912029718.

Almost surely, 2^7648118866 is an apocalyptic number.

7648118866 is a deficient number, since it is larger than the sum of its proper divisors (3824059436).

7648118866 is a wasteful number, since it uses less digits than its factorization.

7648118866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824059435.

The product of its digits is 3096576, while the sum is 55.

The square root of 7648118866 is about 87453.5240341977. The cubic root of 7648118866 is about 1970.2358162055.

The spelling of 7648118866 in words is "seven billion, six hundred forty-eight million, one hundred eighteen thousand, eight hundred sixty-six".