7643825764 has 6 divisors (see below), whose sum is σ = 13376695094. Its totient is φ = 3821912880.

The previous prime is 7643825701. The next prime is 7643825779. The reversal of 7643825764 is 4675283467.

It can be written as a sum of positive squares in only one way, i.e., 5138022400 + 2505803364 = 71680^2 + 50058^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 955478217 + ... + 955478224.

Almost surely, 2^7643825764 is an apocalyptic number.

It is an amenable number.

7643825764 is a deficient number, since it is larger than the sum of its proper divisors (5732869330).

7643825764 is a wasteful number, since it uses less digits than its factorization.

7643825764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910956445 (or 1910956443 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 52.

The square root of 7643825764 is about 87428.9755401492. The cubic root of 7643825764 is about 1969.8670978050.

The spelling of 7643825764 in words is "seven billion, six hundred forty-three million, eight hundred twenty-five thousand, seven hundred sixty-four".