7663838564 has 12 divisors (see below), whose sum is σ = 13774196604. Its totient is φ = 3728353824.

The previous prime is 7663838543. The next prime is 7663838573. The reversal of 7663838564 is 4658383667.

It can be written as a sum of positive squares in 2 ways, for example, as 3411494464 + 4252344100 = 58408^2 + 65210^2 .

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, 25891199 + ... + 25891494.

It is an arithmetic number, because the mean of its divisors is an integer number (1147849717).

Almost surely, 2^7663838564 is an apocalyptic number.

7663838564 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

7663838564 is a deficient number, since it is larger than the sum of its proper divisors (6110358040).

7663838564 is a wasteful number, since it uses less digits than its factorization.

7663838564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51782734 (or 51782732 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 56.

The square root of 7663838564 is about 87543.3524832126. The cubic root of 7663838564 is about 1971.5847455948.

The spelling of 7663838564 in words is "seven billion, six hundred sixty-three million, eight hundred thirty-eight thousand, five hundred sixty-four".